diff --git a/React/Executors/RCTJSCExecutor.h b/React/Executors/RCTJSCExecutor.h
index ef87c8b12..8a5567a27 100644
--- a/React/Executors/RCTJSCExecutor.h
+++ b/React/Executors/RCTJSCExecutor.h
@@ -53,6 +53,11 @@ RCT_EXTERN NSString *const RCTFBJSValueClassKey;
 
 - (instancetype)initWithUseCustomJSCLibrary:(BOOL)useCustomJSCLibrary;
 
+/**
+ * Marks whether the provider uses the custom implementation of JSC and not the system one.
+ */
+@property (nonatomic, readonly, assign) BOOL useCustomJSCLibrary;
+
 @end
 
 /**
diff --git a/React/Executors/RCTJSCExecutor.mm b/React/Executors/RCTJSCExecutor.mm
index 61fdfb495..91fd6a47a 100644
--- a/React/Executors/RCTJSCExecutor.mm
+++ b/React/Executors/RCTJSCExecutor.mm
@@ -944,7 +944,6 @@ RCT_EXPORT_METHOD(setContextName:(nonnull NSString *)name)
 @implementation RCTJSContextProvider
 {
   dispatch_semaphore_t _semaphore;
-  BOOL _useCustomJSCLibrary;
   NSThread *_javaScriptThread;
   JSContext *_context;
   RCTJSCWrapper *_jscWrapper;