diff --git a/mozilla/layout/html/table/src/BasicTableLayoutStrategy.cpp b/mozilla/layout/html/table/src/BasicTableLayoutStrategy.cpp
index 56bca2f5af8..7c56db5b264 100644
--- a/mozilla/layout/html/table/src/BasicTableLayoutStrategy.cpp
+++ b/mozilla/layout/html/table/src/BasicTableLayoutStrategy.cpp
@@ -1384,7 +1384,7 @@ PRBool BasicTableLayoutStrategy::ColumnsAreValidFor(const nsTableCellFrame& aCel
     return PR_FALSE; // XXX add cases where table has coord width and cell is constrained
   }
 
-  PRBool desChanged = PR_FALSE;
+  PRBool desChanged = PR_TRUE;
   if (((cellDes > aPrevCellDes) && (cellDes <= colDes)) ||
       ((cellDes <= aPrevCellDes) && (aPrevCellDes <= colDes))) {
     desChanged = PR_FALSE;
diff --git a/mozilla/layout/tables/BasicTableLayoutStrategy.cpp b/mozilla/layout/tables/BasicTableLayoutStrategy.cpp
index 56bca2f5af8..7c56db5b264 100644
--- a/mozilla/layout/tables/BasicTableLayoutStrategy.cpp
+++ b/mozilla/layout/tables/BasicTableLayoutStrategy.cpp
@@ -1384,7 +1384,7 @@ PRBool BasicTableLayoutStrategy::ColumnsAreValidFor(const nsTableCellFrame& aCel
     return PR_FALSE; // XXX add cases where table has coord width and cell is constrained
   }
 
-  PRBool desChanged = PR_FALSE;
+  PRBool desChanged = PR_TRUE;
   if (((cellDes > aPrevCellDes) && (cellDes <= colDes)) ||
       ((cellDes <= aPrevCellDes) && (aPrevCellDes <= colDes))) {
     desChanged = PR_FALSE;