diff --git a/Classes/ios/UIFont+FlatUI.m b/Classes/ios/UIFont+FlatUI.m
index 0694c57..b62870a 100644
--- a/Classes/ios/UIFont+FlatUI.m
+++ b/Classes/ios/UIFont+FlatUI.m
@@ -22,6 +22,7 @@ + (void) initialize {
             if (url) {
                 CFErrorRef error;
                 CTFontManagerRegisterFontsForURL((__bridge CFURLRef)url, kCTFontManagerScopeNone, &error);
+                CFRelease(error);
             }
         }
     });