diff --git a/Sources/Qonversion/Qonversion/Utils/QNRateLimiter/QONRateLimiter.h b/Sources/Qonversion/Qonversion/Utils/QNRateLimiter/QONRateLimiter.h
index 8d14b4a2..9c28bd0f 100644
--- a/Sources/Qonversion/Qonversion/Utils/QNRateLimiter/QONRateLimiter.h
+++ b/Sources/Qonversion/Qonversion/Utils/QNRateLimiter/QONRateLimiter.h
@@ -27,11 +27,11 @@ typedef NS_ENUM(NSInteger, QONRateLimitedRequestType) {
 
 @interface QONRateLimiter : NSObject
 
-- (instancetype)initWithMaxRequestsPerSecond:(int)maxRequestsPerSecond;
+- (instancetype _Nullable)initWithMaxRequestsPerSecond:(int)maxRequestsPerSecond;
 
 - (void)processWithRateLimit:(QONRateLimitedRequestType)requestType
                         hash:(NSUInteger)hash
-                  completion:(QONRateLimiterCompletionHandler)completion;
+                  completion:(QONRateLimiterCompletionHandler _Nonnull)completion;
 
 - (void)saveRequest:(QONRateLimitedRequestType)requestType hash:(NSUInteger)hash;