diff --git a/src/gui/gui.h b/src/gui/gui.h
index 934f09540..5843a3c14 100644
--- a/src/gui/gui.h
+++ b/src/gui/gui.h
@@ -490,8 +490,7 @@ enum PasteMode {
   GUI_PASTE_MODE_OVERFLOW
 };
 
-// 1<<31
-#define FURKMOD_CTRL (-2147483648)
+#define FURKMOD_CTRL (1U<<31)
 #define FURKMOD_SHIFT (1<<29)
 #define FURKMOD_META (1<<28)
 #define FURKMOD_ALT (1<<27)