diff --git a/hwc3/ComposerClient.cpp b/hwc3/ComposerClient.cpp
index 47ffc7e..0d3f9c0 100644
--- a/hwc3/ComposerClient.cpp
+++ b/hwc3/ComposerClient.cpp
@@ -154,7 +154,9 @@
     // DisplayCommand and return.
     case Composition::DISPLAY_DECORATION:
     case Composition::SIDEBAND:
+#if __ANDROID_API__ >= 34
     case Composition::REFRESH_RATE_INDICATOR:
+#endif
       return false;
   }
 }
@@ -188,7 +190,9 @@
     // Unsupported composition types.
     case Composition::DISPLAY_DECORATION:
     case Composition::SIDEBAND:
+#if __ANDROID_API__ >= 34
     case Composition::REFRESH_RATE_INDICATOR:
+#endif
       ALOGE("Unsupported composition type: %s",
             toString(composition->composition).c_str());
       return std::nullopt;
@@ -1242,6 +1246,8 @@
   return ToBinderStatus(hwc3::Error::kUnsupported);
 }
 
+#if __ANDROID_API__ >= 34
+
 ndk::ScopedAStatus ComposerClient::getOverlaySupport(
     OverlayProperties* /*out_overlay_properties*/) {
   return ToBinderStatus(hwc3::Error::kUnsupported);
@@ -1263,6 +1269,8 @@
   return ToBinderStatus(hwc3::Error::kUnsupported);
 }
 
+#endif
+
 #if __ANDROID_API__ >= 35
 
 ndk::ScopedAStatus ComposerClient::getDisplayConfigurations(
diff --git a/hwc3/ComposerClient.h b/hwc3/ComposerClient.h
index 91a0be0..20d15b4 100644
--- a/hwc3/ComposerClient.h
+++ b/hwc3/ComposerClient.h
@@ -131,6 +131,9 @@
   ndk::ScopedAStatus setVsyncEnabled(int64_t display, bool enabled) override;
   ndk::ScopedAStatus setIdleTimerEnabled(int64_t display,
                                          int32_t timeout) override;
+
+#if __ANDROID_API__ >= 34
+
   ndk::ScopedAStatus getOverlaySupport(
       OverlayProperties* out_overlay_properties) override;
   ndk::ScopedAStatus getHdrConversionCapabilities(
@@ -141,6 +144,8 @@
   ndk::ScopedAStatus setRefreshRateChangedCallbackDebugEnabled(
       int64_t display, bool enabled) override;
 
+#endif
+
 #if __ANDROID_API__ >= 35
 
   ndk::ScopedAStatus getDisplayConfigurations(
diff --git a/hwc3/service.cpp b/hwc3/service.cpp
index d91ce9e..b545a67 100644
--- a/hwc3/service.cpp
+++ b/hwc3/service.cpp
@@ -46,9 +46,14 @@
   const std::string instance = std::string() + Composer::descriptor +
                                "/default";
   ALOGI("HWC3 service name %s", instance.c_str());
+#if __ANDROID_API__ >= 34
   auto status = AServiceManager_addServiceWithFlags(
       composer->asBinder().get(), instance.c_str(),
       AServiceManager_AddServiceFlag::ADD_SERVICE_ALLOW_ISOLATED);
+#else
+  auto status = AServiceManager_addService(composer->asBinder().get(),
+                                           instance.c_str());
+#endif
   if (status != STATUS_OK) {
     ALOGE("Failed to register service. Error %d", (int)status);
     return -EINVAL;