diff --git a/src/hardware/r_opengl/r_opengl.c b/src/hardware/r_opengl/r_opengl.c
index 22bbd0996..ab7d14c06 100644
--- a/src/hardware/r_opengl/r_opengl.c
+++ b/src/hardware/r_opengl/r_opengl.c
@@ -853,7 +853,7 @@ static GLRGBAFloat shader_defaultcolor = {1.0f, 1.0f, 1.0f, 1.0f};
 		"gl_FrontColor = gl_Color;\n" \
 		"gl_TexCoord[0].xy = gl_MultiTexCoord0.xy;\n" \
 		"gl_ClipVertex = gl_ModelViewMatrix * gl_Vertex;\n" \
-		"gl_Position.z -= 80 / gl_Position.z;\n" \
+		"gl_Position.z -= 80.0 / gl_Position.z;\n" \
 	"}\0"
 
 //