diff --git a/React/Base/RCTBatchedBridge.m b/React/Base/RCTBatchedBridge.m
index 6ca0fad9c..debc00d9a 100644
--- a/React/Base/RCTBatchedBridge.m
+++ b/React/Base/RCTBatchedBridge.m
@@ -282,10 +282,11 @@ RCT_EXTERN NSArray<Class> *RCTGetModuleClasses(void);
     id module = preregisteredModules[moduleName];
     if (!module) {
       // Check if the module class, or any of its superclasses override init
-      // or setBridge:. If they do, we assume that they are expecting to be
-      // initialized when the bridge first loads.
+      // or setBridge:, or has exported constants. If they do, we assume that
+      // they are expecting to be initialized when the bridge first loads.
       if ([moduleClass instanceMethodForSelector:@selector(init)] != objectInitMethod ||
-          [moduleClass instancesRespondToSelector:setBridgeSelector]) {
+          [moduleClass instancesRespondToSelector:setBridgeSelector] ||
+          RCTClassOverridesInstanceMethod(moduleClass, @selector(constantsToExport))) {
         module = [moduleClass new];
         if (!module) {
           module = (id)kCFNull;
diff --git a/React/Base/RCTModuleData.m b/React/Base/RCTModuleData.m
index 9d4b57539..78ef8471e 100644
--- a/React/Base/RCTModuleData.m
+++ b/React/Base/RCTModuleData.m
@@ -17,6 +17,7 @@
 
 @implementation RCTModuleData
 {
+  NSDictionary<NSString *, id> *_constantsToExport;
   NSString *_queueName;
   __weak RCTBridge *_bridge;
   NSLock *_instanceLock;
@@ -79,6 +80,11 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init);
     [[NSNotificationCenter defaultCenter] postNotificationName:RCTDidInitializeModuleNotification
                                                         object:_bridge
                                                       userInfo:@{@"module": _instance}];
+
+    if (RCTClassOverridesInstanceMethod(_moduleClass, @selector(constantsToExport))) {
+      RCTAssertMainThread();
+      _constantsToExport = [_instance constantsToExport];
+    }
   }
 }
 
@@ -181,13 +187,8 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init);
 
 - (NSArray *)config
 {
-  __block NSDictionary<NSString *, id> *constants;
-  if (RCTClassOverridesInstanceMethod(_moduleClass, @selector(constantsToExport))) {
-    [self instance];
-    RCTExecuteOnMainThread(^{
-      constants = [_instance constantsToExport];
-    }, YES);
-  }
+  __block NSDictionary<NSString *, id> *constants = _constantsToExport;
+  _constantsToExport = nil; // Not needed any more
 
   if (constants.count == 0 && self.methods.count == 0) {
     return (id)kCFNull; // Nothing to export