diff --git a/mozilla/layout/generic/nsFrame.cpp b/mozilla/layout/generic/nsFrame.cpp
index 656f5c5d070..2a2866f1654 100644
--- a/mozilla/layout/generic/nsFrame.cpp
+++ b/mozilla/layout/generic/nsFrame.cpp
@@ -876,7 +876,7 @@ NS_IMETHODIMP nsFrame::GetPosition(nsIPresContext&        aPresContext,
 
   //return offset;
   aAcutalContentOffset = 0;
-  aOffset = -1;
+  aOffset = 0;
 
   return NS_OK;
 }
diff --git a/mozilla/layout/html/base/src/nsFrame.cpp b/mozilla/layout/html/base/src/nsFrame.cpp
index 656f5c5d070..2a2866f1654 100644
--- a/mozilla/layout/html/base/src/nsFrame.cpp
+++ b/mozilla/layout/html/base/src/nsFrame.cpp
@@ -876,7 +876,7 @@ NS_IMETHODIMP nsFrame::GetPosition(nsIPresContext&        aPresContext,
 
   //return offset;
   aAcutalContentOffset = 0;
-  aOffset = -1;
+  aOffset = 0;
 
   return NS_OK;
 }