diff --git a/CWPopup.podspec b/CWPopup.podspec
index 4532d25..0f24ecb 100644
--- a/CWPopup.podspec
+++ b/CWPopup.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "CWPopup"
-  s.version      = "1.2.0"
+  s.version      = "1.2.1"
   s.summary      = "A category on UIViewController to present a popup view controller."
   s.description  = "CWPopup adds a category on UIViewController to present a popup view controller. It offers an animated and non-animated presentation of the popup, similarly to presenting a modal controller or pushing a view controller."
   s.homepage     = "http://github.com/cezarywojcik/CWPopup"
diff --git a/CWPopup/UIViewController+CWPopup.m b/CWPopup/UIViewController+CWPopup.m
index f316951..96200d3 100644
--- a/CWPopup/UIViewController+CWPopup.m
+++ b/CWPopup/UIViewController+CWPopup.m
@@ -16,6 +16,7 @@ @interface UIImage (ImageBlur)
 - (UIImage *)applyBlurWithRadius:(CGFloat)blurRadius tintColor:(UIColor *)tintColor saturationDeltaFactor:(CGFloat)saturationDeltaFactor maskImage:(UIImage *)maskImage;
 @end
 
+#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 70000
 @implementation UIImage (ImageBlur)
 // This method is taken from Apple's UIImageEffects category provided in WWDC 2013 sample code
 - (UIImage *)applyBlurWithRadius:(CGFloat)blurRadius tintColor:(UIColor *)tintColor saturationDeltaFactor:(CGFloat)saturationDeltaFactor maskImage:(UIImage *)maskImage
@@ -148,6 +149,7 @@ - (UIImage *)applyBlurWithRadius:(CGFloat)blurRadius tintColor:(UIColor *)tintCo
     return outputImage;
 }
 @end
+#endif
 
 #define ANIMATION_TIME 0.5f
 #define STATUS_BAR_SIZE 22
@@ -357,7 +359,12 @@ - (UIViewController *)popupViewController {
 }
 
 - (void)setUseBlurForPopup:(BOOL)useBlurForPopup {
-    objc_setAssociatedObject(self, &CWUseBlurForPopup, [NSNumber numberWithBool:useBlurForPopup], OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+    if ([[[UIDevice currentDevice] systemVersion] floatValue] < 7.0 && useBlurForPopup) {
+        NSLog(@"ERROR: Blur unavailable prior to iOS 7");
+        objc_setAssociatedObject(self, &CWUseBlurForPopup, [NSNumber numberWithBool:NO], OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+    } else {
+        objc_setAssociatedObject(self, &CWUseBlurForPopup, [NSNumber numberWithBool:useBlurForPopup], OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+    }
 }
 
 - (BOOL)useBlurForPopup {
diff --git a/README.md b/README.md
index 56e86da..71a2a3a 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ CWPopup is a category on UIViewController that allows you to easily make popup v
 
 ### [CocoaPods](http://www.cocoapods.org)
 
-`pod 'CWPopup', '~> 1.2.0'`
+`pod 'CWPopup', '~> 1.2.1'`
 
 ### Manual
 
@@ -22,7 +22,7 @@ Import the directory `CWPopup` into your project. It contains the UIViewControll
 
 ### Requirements
 
-* Uses ARC
+* ARC
 * iOS 4.3
 
 ## Usage
@@ -34,6 +34,8 @@ You can choose to use either a fade background or a blurred background. The fade
 
     self.useBlurForPopup = YES;
 
+**NOTE:** Blur is only available in iOS 7+.
+
 To present a view controller:
 
     SamplePopupViewController *samplePopupViewController = [[SamplePopupViewController alloc] initWithNibName:@"SamplePopupViewController" bundle:nil];