diff --git a/AsyncDisplayKit/ASDisplayNode.mm b/AsyncDisplayKit/ASDisplayNode.mm
index ea2a4956f9..2fc5217c3e 100644
--- a/AsyncDisplayKit/ASDisplayNode.mm
+++ b/AsyncDisplayKit/ASDisplayNode.mm
@@ -57,7 +57,7 @@ CGFloat ASDisplayNodeScreenScale()
   return screenScale;
 }
 
-void ASDispatchOnceOnMainThread(dispatch_once_t *predicate, dispatch_block_t block)
+static void ASDispatchOnceOnMainThread(dispatch_once_t *predicate, dispatch_block_t block)
 {
   if ([NSThread isMainThread]) {
     dispatch_once(predicate, block);
diff --git a/AsyncDisplayKit/Details/ASRangeController.mm b/AsyncDisplayKit/Details/ASRangeController.mm
index 4dacf56582..bf53c0a732 100644
--- a/AsyncDisplayKit/Details/ASRangeController.mm
+++ b/AsyncDisplayKit/Details/ASRangeController.mm
@@ -267,7 +267,7 @@
 
   [sections enumerateObjectsUsingBlock:^(NSArray *nodes, NSUInteger idx, BOOL *stop) {
     NSMutableArray *nodeSizes = [NSMutableArray arrayWithCapacity:nodes.count];
-    [nodes enumerateObjectsUsingBlock:^(ASCellNode *node, NSUInteger idx, BOOL *stop) {
+    [nodes enumerateObjectsUsingBlock:^(ASCellNode *node, NSUInteger idx2, BOOL *stop2) {
       [nodeSizes addObject:[NSValue valueWithCGSize:node.calculatedSize]];
     }];
     [sectionNodeSizes addObject:nodeSizes];