diff --git a/internal/platform/implementation/apple/Mediums/BLE/Tests/GNCFakePeripheral.h b/internal/platform/implementation/apple/Mediums/BLE/Tests/GNCFakePeripheral.h
index 866968e8..adf449e6 100644
--- a/internal/platform/implementation/apple/Mediums/BLE/Tests/GNCFakePeripheral.h
+++ b/internal/platform/implementation/apple/Mediums/BLE/Tests/GNCFakePeripheral.h
@@ -56,7 +56,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property(nonatomic, nullable, readwrite) NSError *readValueForCharacteristicError;
 
 /** Similates a delay in all delegate calls by the specified amount. */
-@property(nonatomic, readwrite) NSTimeInterval delegateDelay;
+@property(readwrite) NSTimeInterval delegateDelay;
 
 /**
  * Similates a @c openL2CAPChannelWithPSM: error.
diff --git a/internal/platform/implementation/apple/Mediums/BLE/Tests/GNCFakePeripheral.m b/internal/platform/implementation/apple/Mediums/BLE/Tests/GNCFakePeripheral.m
index 971977ab..916b6495 100644
--- a/internal/platform/implementation/apple/Mediums/BLE/Tests/GNCFakePeripheral.m
+++ b/internal/platform/implementation/apple/Mediums/BLE/Tests/GNCFakePeripheral.m
@@ -136,10 +136,11 @@ NS_ASSUME_NONNULL_BEGIN
 }
 
 - (void)delayDelegateUsingBlock:(void (^)())block {
-  if (_delegateDelay <= 0) {
+  NSTimeInterval delegateDelay = self.delegateDelay;
+  if (delegateDelay <= 0) {
     block();
   } else {
-    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, _delegateDelay * NSEC_PER_SEC),
+    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, delegateDelay * NSEC_PER_SEC),
                    dispatch_get_global_queue(QOS_CLASS_DEFAULT, 0), ^{
                      block();
                    });