diff --git a/objc-promise/Promise.m b/objc-promise/Promise.m
index 324011e..f6bb4e2 100644
--- a/objc-promise/Promise.m
+++ b/objc-promise/Promise.m
@@ -156,8 +156,8 @@ - (BOOL)isRejected
 
 + (Promise *)or:(NSArray *)promises
 {
-    int count = promises.count;
-    __block int rejectedCount = 0;
+    NSUInteger count = promises.count;
+    __block NSUInteger rejectedCount = 0;
     Deferred *deferred = [[Deferred alloc] init];
     
     // any promise resolves our deferred
@@ -179,7 +179,7 @@ + (Promise *)or:(NSArray *)promises
 
 + (Promise *)and:(NSArray *)promises
 {
-    int count = promises.count;
+    NSUInteger count = promises.count;
     __block int resolvedCount = 0;
     Deferred *deferred = [[Deferred alloc] init];