diff --git a/gfx/drivers_context/cocoa_gl_ctx.m b/gfx/drivers_context/cocoa_gl_ctx.m
index f1bb434328..8d38890fd2 100644
--- a/gfx/drivers_context/cocoa_gl_ctx.m
+++ b/gfx/drivers_context/cocoa_gl_ctx.m
@@ -455,8 +455,9 @@ static bool cocoagl_gfx_ctx_get_metrics(void *data, enum display_metric_types ty
     float   physical_width        = screen_rect.size.width  * scale;
     float   physical_height       = screen_rect.size.height * scale;
     float   dpi                   = 160                     * scale;
+    unsigned idiom_type           = UI_USER_INTERFACE_IDIOM();
 
-    switch (UI_USER_INTERFACE_IDIOM())
+    switch (idiom_type)
     {
        case -1: /* UIUserInterfaceIdiomUnspecified */
           /* TODO */