diff --git a/opengl/libs/Android.mk b/opengl/libs/Android.mk
index 2ecc776..5ba6b76 100644
--- a/opengl/libs/Android.mk
+++ b/opengl/libs/Android.mk
@@ -23,6 +23,8 @@
     LOCAL_CFLAGS += -I$(LOCAL_PATH)/../../../../bionic/libc/private
 endif
 
+LOCAL_CFLAGS += -fvisibility=hidden
+
 include $(BUILD_SHARED_LIBRARY)
 
 
@@ -35,7 +37,6 @@
 
 LOCAL_SRC_FILES:= 	\
 	GLES_CM/gl.cpp.arm 		\
-	GLES_CM/gl_logger.cpp 	\
 #
 
 LOCAL_SHARED_LIBRARIES += libcutils libutils libui libEGL
@@ -50,4 +51,6 @@
     LOCAL_CFLAGS += -I$(LOCAL_PATH)/../../../../bionic/libc/private
 endif
 
+LOCAL_CFLAGS += -fvisibility=hidden
+
 include $(BUILD_SHARED_LIBRARY)