--- a/src/misc_gui.cpp	Sun Apr 13 14:19:08 2008 +0000
+++ b/src/misc_gui.cpp	Sun Apr 13 15:07:36 2008 +0000
@@ -778,7 +778,7 @@
 			case SCT_ALL: break;
 			default: NOT_REACHED();
 		}
-		if (cargo[i] >= (supplies ? 1 : 8)) {
+		if (cargo[i] >= (supplies ? 1U : 8U)) {
 			if (first) {
 				first = false;
 			} else {