diff --git a/src/main.c b/src/main.c
index a5faac7..83b9ab6 100644
--- a/src/main.c
+++ b/src/main.c
@@ -48,7 +48,7 @@ typedef void (*keyfunc)(keycode, bool);
 // static const keyfunc	PROGMEM _kb_layout_release[KB_LAYERS][KB_ROWS][KB_COLUMNS];
 
 #if KB_LAYERS > 8
-#error can only handle 8 layers for now
+#error "can only handle 8 layers for now"
 #endif
 
 // ----------------------------------------------------------------------------