diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+Queries.h b/RCTAppleHealthKit/RCTAppleHealthKit+Queries.h
index 36fca79efcd739c2c6ce6644b8c9869123847282..aa02db5f3dc376f4b257822581150c3d43f613d7 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit+Queries.h
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+Queries.h
@@ -51,7 +51,7 @@
                            completion:(void (^)(NSArray *, NSError *))completion;
 - (void)fetchCumulativeSumStatisticsCollection:(HKQuantityType *)quantityType
                                           unit:(HKUnit *)unit
-                                        period:period
+                                        period:(NSUInteger)period
                                      startDate:(NSDate *)startDate
                                        endDate:(NSDate *)endDate
                                      ascending:(BOOL)asc