diff --git a/Harpy/Harpy.m b/Harpy/Harpy.m
index e8e5fb6..13f5ffb 100755
--- a/Harpy/Harpy.m
+++ b/Harpy/Harpy.m
@@ -263,7 +263,9 @@ - (void)appStoreVersionIsNewer:(NSString *)currentAppStoreVersion {
 - (void)launchAppStore {
     NSString *iTunesString = [NSString stringWithFormat:@"https://itunes.apple.com/app/id%@", [self appID]];
     NSURL *iTunesURL = [NSURL URLWithString:iTunesString];
-    [[UIApplication sharedApplication] openURL:iTunesURL];
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [[UIApplication sharedApplication] openURL:iTunesURL];
+    });
 
     if ([self.delegate respondsToSelector:@selector(harpyUserDidLaunchAppStore)]){
         [self.delegate harpyUserDidLaunchAppStore];