diff --git a/ReactCommon/yoga/yoga/Yoga.cpp b/ReactCommon/yoga/yoga/Yoga.cpp
index 24907ea0212e12..e246895ecf13e6 100644
--- a/ReactCommon/yoga/yoga/Yoga.cpp
+++ b/ReactCommon/yoga/yoga/Yoga.cpp
@@ -2952,10 +2952,10 @@ static void YGNodelayoutImpl(
         availableInnerMainDim = maxInnerMainDim;
       } else {
         if (!node->getConfig()->useLegacyStretchBehaviour &&
-            ((YGFloatIsUndefined(
+            ((!YGFloatIsUndefined(
                   collectedFlexItemsValues.totalFlexGrowFactors) &&
               collectedFlexItemsValues.totalFlexGrowFactors == 0) ||
-             (YGFloatIsUndefined(node->resolveFlexGrow()) &&
+             (!YGFloatIsUndefined(node->resolveFlexGrow()) &&
               node->resolveFlexGrow() == 0))) {
           // If we don't have any children to flex or we can't flex the node
           // itself, space we've used is all space we need. Root node also