diff --git a/libs/vibrator/Android.bp b/libs/vibrator/Android.bp
index 22c196e..d3b3a73 100644
--- a/libs/vibrator/Android.bp
+++ b/libs/vibrator/Android.bp
@@ -90,7 +90,6 @@
     ],
 
     shared_libs: [
-        "libbase",
         "liblog",
         "libutils",
         "server_configurable_flags",
diff --git a/libs/vibrator/ExternalVibrationUtils.cpp b/libs/vibrator/ExternalVibrationUtils.cpp
index 4757bdb..ca13afc 100644
--- a/libs/vibrator/ExternalVibrationUtils.cpp
+++ b/libs/vibrator/ExternalVibrationUtils.cpp
@@ -17,10 +17,6 @@
 
 #include <cstring>
 
-#include <android-base/parsedouble.h>
-#include <android-base/properties.h>
-#include <android-base/thread_annotations.h>
-
 #include <android_os_vibrator.h>
 
 #include <algorithm>
@@ -38,21 +34,6 @@
 static constexpr float SCALE_GAMMA = 0.65f; // Same as VibrationEffect.SCALE_GAMMA
 static constexpr float SCALE_LEVEL_GAIN = 1.4f; // Same as VibrationConfig.DEFAULT_SCALE_LEVEL_GAIN
 
-float getScaleLevelGain() {
-    static std::mutex gMutex;
-    static float gScaleLevelGain GUARDED_BY(gMutex) = 0;
-    std::lock_guard lock(gMutex);
-    if (gScaleLevelGain != 0) {
-        return gScaleLevelGain;
-    }
-    float scaleGain;
-    std::string value = ::android::base::GetProperty("vendor.vibrator.scale.level.gain", "");
-    if (value.empty() || !::android::base::ParseFloat(value, &scaleGain) || scaleGain <= 1) {
-        scaleGain = SCALE_LEVEL_GAIN;
-    }
-    return gScaleLevelGain = scaleGain;
-}
-
 float getOldHapticScaleGamma(HapticLevel level) {
     switch (level) {
     case HapticLevel::VERY_LOW:
@@ -98,8 +79,7 @@
             case HapticLevel::NONE:
                 return 1.0f;
             default:
-                float scaleLevelGain = getScaleLevelGain();
-                float scaleFactor = powf(scaleLevelGain, static_cast<int32_t>(level));
+                float scaleFactor = powf(SCALE_LEVEL_GAIN, static_cast<int32_t>(level));
                 if (scaleFactor <= 0) {
                     ALOGE("Invalid scale factor %.2f for level %d, using fallback to 1.0",
                           scaleFactor, static_cast<int32_t>(level));
diff --git a/libs/vibrator/tests/ExternalVibrationUtilsTest.cpp b/libs/vibrator/tests/ExternalVibrationUtilsTest.cpp
index e817263..9369f80 100644
--- a/libs/vibrator/tests/ExternalVibrationUtilsTest.cpp
+++ b/libs/vibrator/tests/ExternalVibrationUtilsTest.cpp
@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-#include <android-base/properties.h>
 #include <android_os_vibrator.h>
 #include <flag_macros.h>
 #include <gtest/gtest.h>
@@ -171,12 +170,6 @@
         ExternalVibrationUtilsTest, TestScaleV2ToHapticLevel,
         // Value of fix_audio_coupled_haptics_scaling is not important, should work with either
         REQUIRES_FLAGS_ENABLED(ACONFIG_FLAG(FLAG_NS, haptics_scale_v2_enabled))) {
-    // Skip test on devices with custom scale level gain configured.
-    if (!::android::base::GetProperty("vendor.vibrator.scale.level.gain", "").empty()) {
-        GTEST_SKIP() << "system property for scale level gain is set, skip tests based on level";
-        return;
-    }
-
     float expectedVeryHigh[TEST_BUFFER_LENGTH] = { 1, -1, 0.8f, -0.38f };
     scaleBuffer(HapticLevel::VERY_HIGH);
     EXPECT_FLOATS_NEARLY_EQ(expectedVeryHigh, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
@@ -198,12 +191,6 @@
         ExternalVibrationUtilsTest, TestScaleV2ToScaleFactorUndefinedUsesHapticLevel,
         // Value of fix_audio_coupled_haptics_scaling is not important, should work with either
         REQUIRES_FLAGS_ENABLED(ACONFIG_FLAG(FLAG_NS, haptics_scale_v2_enabled))) {
-    // Skip test on devices with custom scale level gain configured.
-    if (!::android::base::GetProperty("vendor.vibrator.scale.level.gain", "").empty()) {
-        GTEST_SKIP() << "system property for scale level gain is set, skip tests based on level";
-        return;
-    }
-
     constexpr float adaptiveScaleNone = 1.0f;
     float expectedVeryHigh[TEST_BUFFER_LENGTH] = {1, -1, 0.8f, -0.38f};
     scaleBuffer(HapticScale(HapticLevel::VERY_HIGH, -1.0f /* scaleFactor */, adaptiveScaleNone));
@@ -251,7 +238,7 @@
     EXPECT_FLOATS_NEARLY_EQ(expectedMuted, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
 
     // Haptic level scale up then adaptive scale down
-    float expectedVeryHigh[TEST_BUFFER_LENGTH] = {0.2f, -0.2f, 0.16f, -0.13f};
+    float expectedVeryHigh[TEST_BUFFER_LENGTH] = { 0.2, -0.2, 0.16f, -0.13f };
     scaleBuffer(HapticLevel::VERY_HIGH, 0.2f /* adaptiveScaleFactor */);
     EXPECT_FLOATS_NEARLY_EQ(expectedVeryHigh, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
 
@@ -289,7 +276,7 @@
     EXPECT_FLOATS_NEARLY_EQ(expectedMuted, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
 
     // Haptic level scale up then adaptive scale down
-    float expectedVeryHigh[TEST_BUFFER_LENGTH] = {0.2f, -0.2f, 0.16f, -0.07f};
+    float expectedVeryHigh[TEST_BUFFER_LENGTH] = { 0.2, -0.2, 0.16f, -0.07f };
     scaleBuffer(HapticLevel::VERY_HIGH, 0.2f /* adaptiveScaleFactor */);
     EXPECT_FLOATS_NEARLY_EQ(expectedVeryHigh, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
 
@@ -313,8 +300,8 @@
         ExternalVibrationUtilsTest, TestAdaptiveScaleFactorUndefinedIgnoredScaleV2,
         // Value of fix_audio_coupled_haptics_scaling is not important, should work with either
         REQUIRES_FLAGS_ENABLED(ACONFIG_FLAG(FLAG_NS, haptics_scale_v2_enabled))) {
-    float expectedVeryHigh[TEST_BUFFER_LENGTH] = {1, -1, 0.8, -0.38f};
-    scaleBuffer(HapticScale(HapticLevel::HIGH, 2 /* scaleFactor */, -1 /* adaptiveScaleFactor */));
+    float expectedVeryHigh[TEST_BUFFER_LENGTH] = {1, -1, 0.8f, -0.38f};
+    scaleBuffer(HapticLevel::VERY_HIGH, -1.0f /* adaptiveScaleFactor */);
     EXPECT_FLOATS_NEARLY_EQ(expectedVeryHigh, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
 }
 
@@ -325,30 +312,27 @@
     // Adaptive scale mutes vibration
     float expectedMuted[TEST_BUFFER_LENGTH];
     std::fill(std::begin(expectedMuted), std::end(expectedMuted), 0);
-    scaleBuffer(HapticScale(HapticLevel::HIGH, 2 /* scaleFactor */, 0 /* adaptiveScaleFactor */));
+    scaleBuffer(HapticLevel::VERY_HIGH, 0.0f /* adaptiveScaleFactor */);
     EXPECT_FLOATS_NEARLY_EQ(expectedMuted, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
 
     // Haptic level scale up then adaptive scale down
-    float expectedVeryHigh[TEST_BUFFER_LENGTH] = {0.2f, -0.2f, 0.16f, -0.07f};
-    scaleBuffer(
-            HapticScale(HapticLevel::HIGH, 2 /* scaleFactor */, 0.2f /* adaptiveScaleFactor */));
+    float expectedVeryHigh[TEST_BUFFER_LENGTH] = { 0.2, -0.2, 0.15f, -0.07f };
+    scaleBuffer(HapticLevel::VERY_HIGH, 0.2f /* adaptiveScaleFactor */);
     EXPECT_FLOATS_NEARLY_EQ(expectedVeryHigh, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
 
     // Haptic level scale up then adaptive scale up
-    float expectedHigh[TEST_BUFFER_LENGTH] = {1.5f, -1.5f, 1.2f, -0.57f};
-    scaleBuffer(
-            HapticScale(HapticLevel::HIGH, 2 /* scaleFactor */, 1.5f /* adaptiveScaleFactor */));
+    float expectedHigh[TEST_BUFFER_LENGTH] = { 1.5f, -1.5f, 0.95f, -0.41f };
+    scaleBuffer(HapticLevel::HIGH, 1.5f /* adaptiveScaleFactor */);
     EXPECT_FLOATS_NEARLY_EQ(expectedHigh, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
 
     // Haptic level scale down then adaptive scale down
-    float expectedLow[TEST_BUFFER_LENGTH] = {0.3f, -0.3f, 0.15f, -0.06f};
-    scaleBuffer(
-            HapticScale(HapticLevel::LOW, 0.5f /* scaleFactor */, 0.6f /* adaptiveScaleFactor */));
+    float expectedLow[TEST_BUFFER_LENGTH] = { 0.42f, -0.42f, 0.21f, -0.08f };
+    scaleBuffer(HapticLevel::LOW, 0.6f /* adaptiveScaleFactor */);
     EXPECT_FLOATS_NEARLY_EQ(expectedLow, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
 
     // Haptic level scale down then adaptive scale up
-    float expectedVeryLow[TEST_BUFFER_LENGTH] = {1.0f, -1.0f, 0.51f, -0.2f};
-    scaleBuffer(HapticScale(HapticLevel::LOW, 0.5f /* scaleFactor */, 2 /* adaptiveScaleFactor */));
+    float expectedVeryLow[TEST_BUFFER_LENGTH] = { 1.02f, -1.02f, 0.51f, -0.2f };
+    scaleBuffer(HapticLevel::VERY_LOW, 2 /* adaptiveScaleFactor */);
     EXPECT_FLOATS_NEARLY_EQ(expectedVeryLow, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
 }
 
@@ -386,13 +370,11 @@
         REQUIRES_FLAGS_ENABLED(ACONFIG_FLAG(FLAG_NS, haptics_scale_v2_enabled))) {
     // Scaled = { 0.2, -0.2, 0.15f, -0.07f };
     float expectedClippedVeryHigh[TEST_BUFFER_LENGTH] = { 0.15f, -0.15f, 0.15f, -0.07f };
-    scaleBuffer(HapticScale(HapticLevel::HIGH, 2 /* scaleFactor */, 0.2f /* adaptiveScaleFactor */),
-                0.15f /* limit */);
+    scaleBuffer(HapticLevel::VERY_HIGH, 0.2f /* adaptiveScaleFactor */, 0.15f /* limit */);
     EXPECT_FLOATS_NEARLY_EQ(expectedClippedVeryHigh, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
 
     // Scaled = { 1.02f, -1.02f, 0.51f, -0.2f }
     float expectedClippedVeryLow[TEST_BUFFER_LENGTH] = { 0.7f, -0.7f, 0.51f, -0.2f };
-    scaleBuffer(HapticScale(HapticLevel::LOW, 0.5 /* scaleFactor */, 2 /* adaptiveScaleFactor */),
-                0.7f /* limit */);
+    scaleBuffer(HapticLevel::VERY_LOW, 2 /* adaptiveScaleFactor */, 0.7f /* limit */);
     EXPECT_FLOATS_NEARLY_EQ(expectedClippedVeryLow, mBuffer, TEST_BUFFER_LENGTH, TEST_TOLERANCE);
 }