diff --git a/DemoApp/ViewController.m b/DemoApp/ViewController.m
index ffb034a..7cbcc1b 100644
--- a/DemoApp/ViewController.m
+++ b/DemoApp/ViewController.m
@@ -123,13 +123,13 @@ -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NS
 
 - (void)scrollFullScreen:(NJKScrollFullScreen *)proxy scrollViewDidScrollUp:(CGFloat)deltaY
 {
-    [self moveNavigtionBar:deltaY animated:YES];
+    [self moveNavigationBar:deltaY animated:YES];
     [self moveToolbar:-deltaY animated:YES]; // move to revese direction
 }
 
 - (void)scrollFullScreen:(NJKScrollFullScreen *)proxy scrollViewDidScrollDown:(CGFloat)deltaY
 {
-    [self moveNavigtionBar:deltaY animated:YES];
+    [self moveNavigationBar:deltaY animated:YES];
     [self moveToolbar:-deltaY animated:YES];
 }
 
diff --git a/DemoApp/WebViewController.m b/DemoApp/WebViewController.m
index 634aa22..c38fe14 100644
--- a/DemoApp/WebViewController.m
+++ b/DemoApp/WebViewController.m
@@ -32,13 +32,13 @@ - (void)viewDidLoad
 
 - (void)scrollFullScreen:(NJKScrollFullScreen *)proxy scrollViewDidScrollUp:(CGFloat)deltaY
 {
-    [self moveNavigtionBar:deltaY animated:YES];
+    [self moveNavigationBar:deltaY animated:YES];
     [self moveToolbar:-deltaY animated:YES]; // move to revese direction
 }
 
 - (void)scrollFullScreen:(NJKScrollFullScreen *)proxy scrollViewDidScrollDown:(CGFloat)deltaY
 {
-    [self moveNavigtionBar:deltaY animated:YES];
+    [self moveNavigationBar:deltaY animated:YES];
     [self moveToolbar:-deltaY animated:YES];
 }
 
diff --git a/NJKScrollFullScreen/UIViewController+NJKFullScreenSupport.h b/NJKScrollFullScreen/UIViewController+NJKFullScreenSupport.h
index 248d58e..5a9390a 100644
--- a/NJKScrollFullScreen/UIViewController+NJKFullScreenSupport.h
+++ b/NJKScrollFullScreen/UIViewController+NJKFullScreenSupport.h
@@ -10,7 +10,7 @@
 
 - (void)showNavigationBar:(BOOL)animated;
 - (void)hideNavigationBar:(BOOL)animated;
-- (void)moveNavigtionBar:(CGFloat)deltaY animated:(BOOL)animated;
+- (void)moveNavigationBar:(CGFloat)deltaY animated:(BOOL)animated;
 - (void)setNavigationBarOriginY:(CGFloat)y animated:(BOOL)animated;
 
 - (void)showToolbar:(BOOL)animated;
diff --git a/NJKScrollFullScreen/UIViewController+NJKFullScreenSupport.m b/NJKScrollFullScreen/UIViewController+NJKFullScreenSupport.m
index f59691c..5a8eee8 100644
--- a/NJKScrollFullScreen/UIViewController+NJKFullScreenSupport.m
+++ b/NJKScrollFullScreen/UIViewController+NJKFullScreenSupport.m
@@ -53,7 +53,7 @@ - (void)hideNavigationBar:(BOOL)animated
     [self setNavigationBarOriginY:top animated:animated];
 }
 
-- (void)moveNavigtionBar:(CGFloat)deltaY animated:(BOOL)animated
+- (void)moveNavigationBar:(CGFloat)deltaY animated:(BOOL)animated
 {
     CGRect frame = self.navigationController.navigationBar.frame;
     CGFloat nextY = frame.origin.y + deltaY;
diff --git a/README.md b/README.md
index ddd3e27..2776011 100644
--- a/README.md
+++ b/README.md
@@ -44,12 +44,12 @@ Instance and set `UIScrollViewDelegate` on your view controller. If you set `scr
 ```objc
 - (void)scrollFullScreen:(NJKScrollFullScreen *)proxy scrollViewDidScrollUp:(CGFloat)deltaY
 {
-    [self moveNavigtionBar:deltaY animated:YES];
+    [self moveNavigationBar:deltaY animated:YES];
 }
 
 - (void)scrollFullScreen:(NJKScrollFullScreen *)proxy scrollViewDidScrollDown:(CGFloat)deltaY
 {
-    [self moveNavigtionBar:deltaY animated:YES];
+    [self moveNavigationBar:deltaY animated:YES];
 }
 
 - (void)scrollFullScreenScrollViewDidEndDraggingScrollUp:(NJKScrollFullScreen *)proxy
@@ -87,7 +87,7 @@ Or you can implement own full screen behavior like below.
     [self setNavigationBarOriginY:0 animated:animated];
 }
 
-- (void)moveNavigtionBar:(CGFloat)deltaY animated:(BOOL)animated
+- (void)moveNavigationBar:(CGFloat)deltaY animated:(BOOL)animated
 {
     CGRect frame = self.navigationController.navigationBar.frame;
     CGFloat nextY = frame.origin.y + deltaY;