diff --git a/opengl/libs/Android.mk b/opengl/libs/Android.mk
index d636d73..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)
 
 
@@ -49,4 +51,6 @@
     LOCAL_CFLAGS += -I$(LOCAL_PATH)/../../../../bionic/libc/private
 endif
 
+LOCAL_CFLAGS += -fvisibility=hidden
+
 include $(BUILD_SHARED_LIBRARY)
diff --git a/opengl/libs/egl_impl.h b/opengl/libs/egl_impl.h
index 62ce3fc..312b176 100644
--- a/opengl/libs/egl_impl.h
+++ b/opengl/libs/egl_impl.h
@@ -20,6 +20,8 @@
 #include <ctype.h>
 
 #include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <EGL/eglplatform.h>
 
 // ----------------------------------------------------------------------------
 namespace android {