diff --git a/Source/ASDisplayNode+Layout.mm b/Source/ASDisplayNode+Layout.mm
index bf85800ab..979db6ca3 100644
--- a/Source/ASDisplayNode+Layout.mm
+++ b/Source/ASDisplayNode+Layout.mm
@@ -395,8 +395,9 @@ - (void)_u_measureNodeWithBoundsIfNecessary:(CGRect)bounds
       nextLayout.requestedLayoutFromAbove = YES;
 
       {
-        ASDN::MutexUnlocker u(__instanceLock__);
+        __instanceLock__.unlock();
         [self _u_setNeedsLayoutFromAbove];
+        __instanceLock__.lock();
       }
 
       // Update the layout's version here because _u_setNeedsLayoutFromAbove calls __setNeedsLayout which in turn increases _layoutVersion