diff --git a/media/tests/audiotests/Android.mk b/media/tests/audiotests/Android.mk
index 69f0bb5d185be..794e7f22419aa 100644
--- a/media/tests/audiotests/Android.mk
+++ b/media/tests/audiotests/Android.mk
@@ -1,21 +1,23 @@
-ifeq ($(TARGET_ARCH),arm)
 
 LOCAL_PATH:= $(call my-dir)
 
 include $(CLEAR_VARS)
 
 LOCAL_MODULE:= shared_mem_test
+
 LOCAL_SRC_FILES := \
-		   shared_mem_test.cpp
+    shared_mem_test.cpp
+
 LOCAL_SHARED_LIBRARIES :=  \
-		libc \
-        libcutils \
-        libutils \
-        libbinder \
-        libhardware_legacy \
-		libmedia
+    libc \
+    libcutils \
+    libutils \
+    libbinder \
+    libhardware_legacy \
+    libmedia
+
 LOCAL_MODULE_TAGS := tests
 
-include $(BUILD_EXECUTABLE)
+LOCAL_CFLAGS += -Wall -Werror -Wunused -Wunreachable-code
 
-endif
+include $(BUILD_EXECUTABLE)
diff --git a/media/tests/audiotests/shared_mem_test.cpp b/media/tests/audiotests/shared_mem_test.cpp
index 992c900d31a23..2f5749933b547 100644
--- a/media/tests/audiotests/shared_mem_test.cpp
+++ b/media/tests/audiotests/shared_mem_test.cpp
@@ -133,12 +133,8 @@ int AudioTrackTest::Test01() {
 ************************************************************/
 void AudioTrackTest::Generate(short *buffer, long bufferSz, long amplitude, unsigned long &phi, long dPhi)
 {
-    long pi13 = 25736;   // 2^13*pi
     // fill buffer
     for(int i0=0; i0<bufferSz; i0++) {
-        long sample;
-        long l0, l1;
-
         buffer[i0] = ComputeSine( amplitude, phi);
         phi += dPhi;
     }
@@ -210,7 +206,7 @@ int main() {
 *    global main
 *
 ************************************************************/
-int main(int argc, char *argv[]) {
+int main() {
 
     return android::main();
 }
diff --git a/media/tests/players/Android.mk b/media/tests/players/Android.mk
index adf0d304617b2..7ab64584fe3a6 100644
--- a/media/tests/players/Android.mk
+++ b/media/tests/players/Android.mk
@@ -26,5 +26,6 @@ LOCAL_SHARED_LIBRARIES:= \
 LOCAL_MODULE:= invoke_mock_media_player
 LOCAL_MODULE_TAGS := tests eng
 
+LOCAL_CFLAGS += -Wall -Werror -Wunused -Wunreachable-code
 
 include $(BUILD_SHARED_LIBRARY)
diff --git a/media/tests/players/invoke_mock_media_player.cpp b/media/tests/players/invoke_mock_media_player.cpp
index d1fed7bb95d97..0d0c7adcdb54c 100644
--- a/media/tests/players/invoke_mock_media_player.cpp
+++ b/media/tests/players/invoke_mock_media_player.cpp
@@ -58,7 +58,7 @@ class Player: public MediaPlayerBase
     virtual bool        hardwareOutput() {return true;}
 
     virtual status_t    setDataSource(
-            const sp<IMediaHTTPService> &httpService,
+            const sp<IMediaHTTPService>& /* httpService */,
             const char *url,
             const KeyedVector<String8, String8> *) {
         ALOGV("setDataSource %s", url);
@@ -69,24 +69,28 @@ class Player: public MediaPlayerBase
         return OK;
     }
 
-    virtual status_t    setDataSource(int fd, int64_t offset, int64_t length) {return OK;}
+    virtual status_t    setDataSource(int /* fd */, int64_t /* offset */, int64_t /* length */) {
+        return OK;
+    }
     virtual status_t    setVideoSurfaceTexture(
-                                const sp<IGraphicBufferProducer>& bufferProducer) {return OK;}
-    virtual status_t    prepare() {return OK;}
-    virtual status_t    prepareAsync() {return OK;}
-    virtual status_t    start() {return OK;}
-    virtual status_t    stop() {return OK;}
-    virtual status_t    pause() {return OK;}
-    virtual bool        isPlaying() {return true;}
-    virtual status_t    seekTo(int msec) {return OK;}
-    virtual status_t    getCurrentPosition(int *msec) {return OK;}
-    virtual status_t    getDuration(int *msec) {return OK;}
+                                const sp<IGraphicBufferProducer>& /* bufferProducer */) {
+        return OK;
+    }
+    virtual status_t    prepare() { return OK; }
+    virtual status_t    prepareAsync() { return OK; }
+    virtual status_t    start() { return OK; }
+    virtual status_t    stop() { return OK; }
+    virtual status_t    pause() { return OK; }
+    virtual bool        isPlaying() { return true; }
+    virtual status_t    seekTo(int /* msec */) { return OK; }
+    virtual status_t    getCurrentPosition(int* /* msec */) { return OK; }
+    virtual status_t    getDuration(int* /* msec */) { return OK; }
     virtual status_t    reset() {return OK;}
-    virtual status_t    setLooping(int loop) {return OK;}
+    virtual status_t    setLooping(int /* loop */) { return OK; }
     virtual player_type playerType() {return TEST_PLAYER;}
     virtual status_t    invoke(const Parcel& request, Parcel *reply);
-    virtual status_t    setParameter(int key, const Parcel &request) {return OK;}
-    virtual status_t    getParameter(int key, Parcel *reply) {return OK;}
+    virtual status_t    setParameter(int /* key */, const Parcel& /* request */) { return OK; }
+    virtual status_t    getParameter(int /* key */, Parcel* /* reply */) { return OK; }
 
 
   private: