diff --git a/vlib/sokol/c/c.v b/vlib/sokol/c/c.v
index 6f8beb7662..26f49edd6f 100644
--- a/vlib/sokol/c/c.v
+++ b/vlib/sokol/c/c.v
@@ -18,6 +18,7 @@ pub const (
 
 // OPENGL
 #flag linux -DSOKOL_GLCORE33
+#flag windows -DSOKOL_GLCORE33
 //#flag darwin -framework OpenGL -framework Cocoa -framework QuartzCore