diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8ec10c6..ba34296 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@ if(DEBUG)
 	if (MSVC)
     		add_compile_options(/EHr /fsanitize /validate-charset /DEBUG /RTCu /RTCs /RTCc /guard:cf /GS)
 	else()
-    		add_compile_options(-g3 -O0 -fno-omit-frame-pointer -ggdb -Wall -fcheck-new -gbtf -ggnu-pubnames -fexceptions)
+    		add_compile_options(-g3 -O0 -fno-omit-frame-pointer -ggdb -Wall -fcheck-new -gbtf)
 	endif()
 else()
 	# Optimization stuff
diff --git a/binding-mri/bitmap-binding.cpp b/binding-mri/bitmap-binding.cpp
index 780c15f..fd4b0c9 100644
--- a/binding-mri/bitmap-binding.cpp
+++ b/binding-mri/bitmap-binding.cpp
@@ -108,7 +108,7 @@ RB_METHOD(bitmapBlt){
 	int x, y;
 	VALUE srcObj;
 	VALUE srcRectObj;
-	unsigned short opacity = 255;
+	int opacity = 255;
 
 	Bitmap *src;
 	Rect *srcRect;
@@ -129,7 +129,7 @@ RB_METHOD(bitmapStretchBlt){
 	VALUE destRectObj;
 	VALUE srcObj;
 	VALUE srcRectObj;
-	unsigned short opacity = 255;
+	int opacity = 255;
 
 	Bitmap *src;
 	Rect *destRect, *srcRect;