diff --git a/BFNavigationBarDrawer/BFNavigationBarDrawer.m b/BFNavigationBarDrawer/BFNavigationBarDrawer.m
index 9c72c37..5154b27 100644
--- a/BFNavigationBarDrawer/BFNavigationBarDrawer.m
+++ b/BFNavigationBarDrawer/BFNavigationBarDrawer.m
@@ -80,7 +80,7 @@ - (void)setupConstraintsWithNavigationBar:(UINavigationBar *)bar {
 	constraint = [NSLayoutConstraint constraintWithItem:self
 											  attribute:NSLayoutAttributeLeft
 											  relatedBy:NSLayoutRelationEqual
-												 toItem:bar
+												 toItem:bar.superview
 											  attribute:NSLayoutAttributeLeft
 											 multiplier:1
 											   constant:0];
@@ -89,7 +89,7 @@ - (void)setupConstraintsWithNavigationBar:(UINavigationBar *)bar {
 	constraint = [NSLayoutConstraint constraintWithItem:self
 											  attribute:NSLayoutAttributeRight
 											  relatedBy:NSLayoutRelationEqual
-												 toItem:bar
+												 toItem:bar.superview
 											  attribute:NSLayoutAttributeRight
 											 multiplier:1
 											   constant:0];