diff --git a/packages/react-native/ReactCommon/react/runtime/platform/ios/ReactCommon/RCTInstance.mm b/packages/react-native/ReactCommon/react/runtime/platform/ios/ReactCommon/RCTInstance.mm
index 8dd279da7d61b1..561fac8dd572df 100644
--- a/packages/react-native/ReactCommon/react/runtime/platform/ios/ReactCommon/RCTInstance.mm
+++ b/packages/react-native/ReactCommon/react/runtime/platform/ios/ReactCommon/RCTInstance.mm
@@ -121,8 +121,11 @@ - (instancetype)initWithDelegate:(id<RCTInstanceDelegate>)delegate
       [_bridgeModuleDecorator.callableJSModules
           setBridgelessJSModuleMethodInvoker:^(
               NSString *moduleName, NSString *methodName, NSArray *args, dispatch_block_t onComplete) {
-            // TODO: Make RCTInstance call onComplete
             [weakSelf callFunctionOnJSModule:moduleName method:methodName args:args];
+            if (onComplete) {
+              [weakSelf
+                  callFunctionOnBufferedRuntimeExecutor:[onComplete](facebook::jsi::Runtime &_) { onComplete(); }];
+            }
           }];
     }
     _launchOptions = launchOptions;