diff --git a/xfa/fxfa/layout/cxfa_layoutpagemgr.cpp b/xfa/fxfa/layout/cxfa_layoutpagemgr.cpp
index 112538d..e4d5eba 100644
--- a/xfa/fxfa/layout/cxfa_layoutpagemgr.cpp
+++ b/xfa/fxfa/layout/cxfa_layoutpagemgr.cpp
@@ -293,6 +293,9 @@
     if (pContentAreaNode->GetElementType() != XFA_Element::ContentArea)
       continue;
 
+    if (iCurContentAreaIndex >= rgUsedHeights.size())
+      return false;
+
     const float fHeight = pContentAreaNode->JSObject()->GetMeasureInUnit(
                               XFA_Attribute::H, XFA_Unit::Pt) +
                           kXFALayoutPrecision;