diff --git a/quickdialog/QBindingEvaluator.m b/quickdialog/QBindingEvaluator.m
index 586c5145..84f205a3 100644
--- a/quickdialog/QBindingEvaluator.m
+++ b/quickdialog/QBindingEvaluator.m
@@ -49,7 +49,7 @@ - (void)bindObject:(id)object toData:(id)data withString:string {
 
     for (NSString *each in [string componentsSeparatedByString:@","]) {
         NSArray *bindingParams = [each componentsSeparatedByString:@":"];
-
+        if (bindingParams.count < 2) continue;
         NSString *propName = [((NSString *) [bindingParams objectAtIndex:0]) stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
         NSString *valueName = [((NSString *) [bindingParams objectAtIndex:1]) stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];