Index: src/MenuItem.m
==================================================================
--- src/MenuItem.m
+++ src/MenuItem.m
@@ -16,12 +16,21 @@
 	MenuItem *otherItem;
 
 	if (![otherObject isKindOfClass:MenuItem.class])
 		@throw [OFInvalidArgumentException exception];
 
-	int x = (int)_text.longLongValue;
-	int y = (int)otherItem.text.longLongValue;
+	int x, y;
+	@try {
+		x = (int)_text.longLongValue;
+	} @catch (OFInvalidFormatException *e) {
+		x = 0;
+	}
+	@try {
+		y = (int)otherItem.text.longLongValue;
+	} @catch (OFInvalidFormatException *e) {
+		y = 0;
+	}
 
 	if (x > y)
 		return OFOrderedAscending;
 	if (x < y)
 		return OFOrderedDescending;