diff --git a/lib/UIKit/TUIFastIndexPath.m b/lib/UIKit/TUIFastIndexPath.m
index 779d913a..a8f12f08 100644
--- a/lib/UIKit/TUIFastIndexPath.m
+++ b/lib/UIKit/TUIFastIndexPath.m
@@ -85,7 +85,7 @@ - (void)encodeWithCoder:(NSCoder *)coder
 
 - (NSString *)description
 {
-	return [NSString stringWithFormat:@"[%d,%d]", section, row];
+	return [NSString stringWithFormat:@"[%ld,%ld]", section, row];
 }
 
 - (NSUInteger)section
diff --git a/lib/UIKit/TUIView.m b/lib/UIKit/TUIView.m
index 91d703b1..ac7ec38a 100644
--- a/lib/UIKit/TUIView.m
+++ b/lib/UIKit/TUIView.m
@@ -454,7 +454,7 @@ - (void)setContentMode:(TUIViewContentMode)contentMode
 	} else if(contentMode == TUIViewContentModeScaleAspectFill) {
 		_layer.contentsGravity = kCAGravityResizeAspectFill;
 	} else {
-		NSAssert1(NO, @"%lu is not a valid contentMode.", contentMode);
+		NSAssert1(NO, @"%ud is not a valid contentMode.", contentMode);
 	}
 }