diff --git a/services/inputflinger/UnwantedInteractionBlocker.cpp b/services/inputflinger/UnwantedInteractionBlocker.cpp
index 64dbb8c..f904bfd 100644
--- a/services/inputflinger/UnwantedInteractionBlocker.cpp
+++ b/services/inputflinger/UnwantedInteractionBlocker.cpp
@@ -44,7 +44,8 @@
 }
 
 static bool isFromTouchscreen(int32_t source) {
-    return isFromSource(source, AINPUT_SOURCE_TOUCHSCREEN);
+    return isFromSource(source, AINPUT_SOURCE_TOUCHSCREEN) &&
+            !isFromSource(source, AINPUT_SOURCE_STYLUS);
 }
 
 static ::base::TimeTicks toChromeTimestamp(nsecs_t eventTime) {
@@ -367,6 +368,14 @@
 }
 
 void UnwantedInteractionBlocker::notifyMotion(const NotifyMotionArgs* args) {
+    ftl::StaticVector<NotifyMotionArgs, 2> processedArgs =
+            mPreferStylusOverTouchBlocker.processMotion(*args);
+    for (const NotifyMotionArgs& loopArgs : processedArgs) {
+        notifyMotionInner(&loopArgs);
+    }
+}
+
+void UnwantedInteractionBlocker::notifyMotionInner(const NotifyMotionArgs* args) {
     auto it = mPalmRejectors.find(args->deviceId);
     const bool sendToPalmRejector = it != mPalmRejectors.end() && isFromTouchscreen(args->source);
     if (!sendToPalmRejector) {
@@ -440,6 +449,8 @@
 
 void UnwantedInteractionBlocker::dump(std::string& dump) {
     dump += "UnwantedInteractionBlocker:\n";
+    dump += "  mPreferStylusOverTouchBlocker:\n";
+    dump += addPrefix(mPreferStylusOverTouchBlocker.dump(), "    ");
     dump += StringPrintf("  mEnablePalmRejection: %s\n", toString(mEnablePalmRejection));
     dump += StringPrintf("  isPalmRejectionEnabled (flag value): %s\n",
                          toString(isPalmRejectionEnabled()));