diff --git a/src/modules/graphics/opengl/wrap_Canvas.cpp b/src/modules/graphics/opengl/wrap_Canvas.cpp
index bf6a9b3da..8eee30c9a 100644
--- a/src/modules/graphics/opengl/wrap_Canvas.cpp
+++ b/src/modules/graphics/opengl/wrap_Canvas.cpp
@@ -185,7 +185,7 @@ int w_Canvas_clear(lua_State *L)
 		c.r = (unsigned char)luaL_checkint(L, -4);
 		c.g = (unsigned char)luaL_checkint(L, -3);
 		c.b = (unsigned char)luaL_checkint(L, -2);
-		c.g = (unsigned char)luaL_optint(L, -1, 255);
+		c.a = (unsigned char)luaL_optint(L, -1, 255);
 
 		lua_pop(L, 4);
 	}
diff --git a/src/modules/graphics/opengl/wrap_Graphics.cpp b/src/modules/graphics/opengl/wrap_Graphics.cpp
index d384c0d69..d46bf743d 100644
--- a/src/modules/graphics/opengl/wrap_Graphics.cpp
+++ b/src/modules/graphics/opengl/wrap_Graphics.cpp
@@ -1168,8 +1168,8 @@ int w_drawq(lua_State *L)
 {
 	DrawQable *dq = luax_checktype<DrawQable>(L, 1, "DrawQable", GRAPHICS_DRAWQABLE_T);
 	Quad *q = luax_checkquad(L, 2);
-	float x = (float)luaL_checknumber(L, 3);
-	float y = (float)luaL_checknumber(L, 4);
+	float x = (float)luaL_optnumber(L, 3, 0.0f);
+	float y = (float)luaL_optnumber(L, 4, 0.0f);
 	float angle = (float)luaL_optnumber(L, 5, 0);
 	float sx = (float)luaL_optnumber(L, 6, 1);
 	float sy = (float)luaL_optnumber(L, 7, sx);