diff --git a/React/Modules/RCTI18nUtil.h b/React/Modules/RCTI18nUtil.h
index b9871976591efc..0f228721816164 100644
--- a/React/Modules/RCTI18nUtil.h
+++ b/React/Modules/RCTI18nUtil.h
@@ -17,11 +17,12 @@
  */
 @interface RCTI18nUtil : NSObject
 
++ (instancetype)sharedInstance;
+
 - (BOOL)isRTL;
 - (BOOL)isRTLAllowed;
 - (void)allowRTL:(BOOL)value;
 - (BOOL)isRTLForced;
 - (void)forceRTL:(BOOL)value;
-+ (id)sharedInstance;
 
 @end
diff --git a/React/Modules/RCTI18nUtil.m b/React/Modules/RCTI18nUtil.m
index 443c9930233d68..a3a206b2391c0b 100644
--- a/React/Modules/RCTI18nUtil.m
+++ b/React/Modules/RCTI18nUtil.m
@@ -13,13 +13,15 @@
 
 @implementation RCTI18nUtil
 
-+ (id)sharedInstance {
-   static RCTI18nUtil *sharedRCTI18nUtilInstance = nil;
-   @synchronized(self) {
-     if (sharedRCTI18nUtilInstance == nil)
-      sharedRCTI18nUtilInstance = [self new];
-   }
-   return sharedRCTI18nUtilInstance;
++ (instancetype)sharedInstance
+{
+  static RCTI18nUtil *sharedInstance;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    sharedInstance = [self new];
+  });
+  
+  return sharedInstance;
 }
 
 /**