diff --git a/src/graphics/graphics.c b/src/graphics/graphics.c
index 9c243408..61925089 100644
--- a/src/graphics/graphics.c
+++ b/src/graphics/graphics.c
@@ -132,15 +132,15 @@ void lovrGraphicsSetColor(unsigned char r, unsigned char g, unsigned char b, uns
   state.color = LOVR_COLOR(r, g, b, a);
 }
 
-void lovrGraphicsGetColorMask(unsigned char* r, unsigned char* g, unsigned char* b, unsigned char* a) {
-  unsigned char mask = state.colorMask;
+void lovrGraphicsGetColorMask(char* r, char* g, char* b, char* a) {
+  char mask = state.colorMask;
   *r = mask & 0x1;
   *g = mask & 0x2;
   *b = mask & 0x4;
   *a = mask & 0x8;
 }
 
-void lovrGraphicsSetColorMask(unsigned char r, unsigned char g, unsigned char b, unsigned char a) {
+void lovrGraphicsSetColorMask(char r, char g, char b, char a) {
   state.colorMask = ((r & 1) << 0) | ((g & 1) << 1) | ((b & 1) << 2) | ((a & 1) << 3);
   glColorMask(r, g, b, a);
 }
diff --git a/src/graphics/graphics.h b/src/graphics/graphics.h
index 3b623b90..6484daa6 100644
--- a/src/graphics/graphics.h
+++ b/src/graphics/graphics.h
@@ -34,7 +34,7 @@ typedef struct {
   mat4 lastProjection;
   unsigned int color;
   unsigned int lastColor;
-  unsigned char colorMask;
+  char colorMask;
   char isScissorEnabled;
   ScissorRectangle scissor;
   GLuint shapeArray;
@@ -55,8 +55,8 @@ void lovrGraphicsGetBackgroundColor(float* r, float* g, float* b, float* a);
 void lovrGraphicsSetBackgroundColor(float r, float g, float b, float a);
 void lovrGraphicsGetColor(unsigned char* r, unsigned char* g, unsigned char* b, unsigned char* a);
 void lovrGraphicsSetColor(unsigned char r, unsigned char g, unsigned char b, unsigned char a);
-void lovrGraphicsGetColorMask(unsigned char* r, unsigned char* g, unsigned char* b, unsigned char* a);
-void lovrGraphicsSetColorMask(unsigned char r, unsigned char g, unsigned char b, unsigned char a);
+void lovrGraphicsGetColorMask(char* r, char* g, char* b, char* a);
+void lovrGraphicsSetColorMask(char r, char g, char b, char a);
 char lovrGraphicsIsScissorEnabled();
 void lovrGraphicsSetScissorEnabled(char isEnabled);
 void lovrGraphicsGetScissor(int* x, int* y, int* width, int* height);
diff --git a/src/lovr/graphics.c b/src/lovr/graphics.c
index e4c2b70d..4884fb5f 100644
--- a/src/lovr/graphics.c
+++ b/src/lovr/graphics.c
@@ -129,7 +129,7 @@ int l_lovrGraphicsSetColor(lua_State* L) {
 }
 
 int l_lovrGraphicsGetColorMask(lua_State* L) {
-  unsigned char r, g, b, a;
+  char r, g, b, a;
   lovrGraphicsGetColorMask(&r, &g, &b, &a);
   lua_pushboolean(L, r);
   lua_pushboolean(L, g);
@@ -144,10 +144,10 @@ int l_lovrGraphicsSetColorMask(lua_State* L) {
     return 0;
   }
 
-  unsigned char r = lua_toboolean(L, 1);
-  unsigned char g = lua_toboolean(L, 2);
-  unsigned char b = lua_toboolean(L, 3);
-  unsigned char a = lua_toboolean(L, 4);
+  char r = lua_toboolean(L, 1);
+  char g = lua_toboolean(L, 2);
+  char b = lua_toboolean(L, 3);
+  char a = lua_toboolean(L, 4);
   lovrGraphicsSetColorMask(r, g, b, a);
   return 0;
 }