diff --git a/tests/hwc/Android.mk b/tests/hwc/Android.mk
index 4cae9eb..367f5f4 100644
--- a/tests/hwc/Android.mk
+++ b/tests/hwc/Android.mk
@@ -3,6 +3,7 @@
 include $(CLEAR_VARS)
 LOCAL_MODULE := libcnativewindow 
 LOCAL_SRC_FILES := cnativewindow.c util.c
+LOCAL_CFLAGS := -Wno-unused-parameter
 include $(BUILD_STATIC_LIBRARY)
 
 include $(CLEAR_VARS)
diff --git a/tests/hwc/cnativewindow.c b/tests/hwc/cnativewindow.c
index 76f4564..5c16afb 100644
--- a/tests/hwc/cnativewindow.c
+++ b/tests/hwc/cnativewindow.c
@@ -337,8 +337,8 @@
 		TRACE("set scaling mode %d\n", va_arg(ap,int));
 		return 0;
 	case NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS: {
-		int w = va_arg(ap,int);
-		int h = va_arg(ap,int);
+		unsigned int w = va_arg(ap,unsigned int);
+		unsigned int h = va_arg(ap,unsigned int);
 		if ((w == win->width) && (h == win->height)) {
 			TRACE("set buffers dimensions %d x %d\n", w, h);
 			return 0;
@@ -377,7 +377,7 @@
 	unsigned i;
 	int r;
 	uint32_t configs[32];
-	uint32_t numconfigs = 32;
+	size_t numconfigs = 32;
 	int32_t values[8];
 
 	if (hw_get_module(HWC_HARDWARE_MODULE_ID, &module) != 0) {