diff --git a/sparrow/src/Classes/SPButton.m b/sparrow/src/Classes/SPButton.m
index 3ebcba1e..a0391248 100644
--- a/sparrow/src/Classes/SPButton.m
+++ b/sparrow/src/Classes/SPButton.m
@@ -25,7 +25,7 @@
 
 @implementation SPButton
 {
-    SPTexture *_upState;
+    SPTexture *__nonnull _upState;
     SPTexture *_downState;
     SPTexture *_disabledState;
     
@@ -221,7 +221,7 @@ - (void)onTouch:(SPTouchEvent *)touchEvent
 
 #pragma mark Private
 
-- (void)setStateTexture:(SPTexture *)texture
+- (void)setStateTexture:(SPTexture * _Nonnull)texture
 {
     _body.texture = texture ?: _upState;
 }
diff --git a/sparrow/src/Classes/SPFrameBuffer.h b/sparrow/src/Classes/SPFrameBuffer.h
index 8a2bf143..47502a2e 100644
--- a/sparrow/src/Classes/SPFrameBuffer.h
+++ b/sparrow/src/Classes/SPFrameBuffer.h
@@ -42,7 +42,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (void)present;
 
 /// Draws the framebuffer to an image.
-- (UIImage *)drawToImageInRegion:(SPRectangle *)region;
+- (UIImage *)drawToImageInRegion:(nullable SPRectangle *)region;
 
 /// Returns the framebuffer's drawable object or nil if this a texture based framebuffer.
 @property (nonatomic, readonly, nullable) id drawable;
diff --git a/sparrow/src/Classes/SPViewController.m b/sparrow/src/Classes/SPViewController.m
index e13bfcd2..1f13adf1 100644
--- a/sparrow/src/Classes/SPViewController.m
+++ b/sparrow/src/Classes/SPViewController.m
@@ -228,6 +228,7 @@ - (void)updateViewPort:(BOOL)forceUpdate
                 SPEvent *resizeEvent = [[SPResizeEvent alloc] initWithType:SPEventTypeResize
                                         width:newWidth height:newHeight];
                 [_stage broadcastEvent:resizeEvent];
+                [resizeEvent release];
             }
         }
     }
@@ -517,6 +518,8 @@ - (void)loadView
 
 - (void)viewDidLoad
 {
+    [super viewDidLoad];
+    
     if (!_overlayView)
     {
         _overlayView = [[SPOverlayView alloc] initWithFrame:_internalView.frame];
@@ -628,16 +631,23 @@ - (void)processTouchEvent:(UIEvent *)event
                 touch.previousGlobalY = previousLocation.y * yConversion;
                 touch.tapCount = (int)uiTouch.tapCount;
                 touch.phase = (SPTouchPhase)uiTouch.phase;
-#pragma clang diagnostic push
-#pragma ide diagnostic ignored "UnavailableInDeploymentTarget"
-                if ([uiTouch respondsToSelector:@selector(force)] && uiTouch.maximumPossibleForce > 0) {
+                touch.touchID = (size_t)uiTouch;
+                
+              #pragma clang diagnostic push
+              #pragma ide diagnostic ignored "UnavailableInDeploymentTarget"
+                
+                if ([uiTouch respondsToSelector:@selector(force)] &&
+                     uiTouch.maximumPossibleForce > 0)
+                {
                     touch.forceFactor = uiTouch.force / uiTouch.maximumPossibleForce;
-                } else {
+                }
+                else
+                {
                     touch.forceFactor = 0;
                 }
-#pragma clang diagnostic pop
-                touch.touchID = (size_t)uiTouch;
-
+                
+              #pragma clang diagnostic pop
+                
                 [_touchProcessor enqueueTouch:touch];
             }
 
@@ -706,6 +716,7 @@ - (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)interf
         SPEvent *resizeEvent = [[SPResizeEvent alloc] initWithType:SPEventTypeResize
                                 width:newWidth height:newHeight animationTime:duration];
         [_stage broadcastEvent:resizeEvent];
+        [resizeEvent release];
     }
 }