diff --git a/layout/base/nsCSSFrameConstructor.cpp b/layout/base/nsCSSFrameConstructor.cpp
index 8ed10537f15..253551bd9d2 100644
--- a/layout/base/nsCSSFrameConstructor.cpp
+++ b/layout/base/nsCSSFrameConstructor.cpp
@@ -3074,7 +3074,7 @@ nsCSSFrameConstructor::ConstructTableForeignFrame(nsIPresShell*            aPres
   return rv;
 }
 
-PRBool 
+static PRBool 
 NeedFrameFor(nsIFrame*   aParentFrame,
              nsIContent* aChildContent) 
 {
diff --git a/layout/html/style/src/nsCSSFrameConstructor.cpp b/layout/html/style/src/nsCSSFrameConstructor.cpp
index 8ed10537f15..253551bd9d2 100644
--- a/layout/html/style/src/nsCSSFrameConstructor.cpp
+++ b/layout/html/style/src/nsCSSFrameConstructor.cpp
@@ -3074,7 +3074,7 @@ nsCSSFrameConstructor::ConstructTableForeignFrame(nsIPresShell*            aPres
   return rv;
 }
 
-PRBool 
+static PRBool 
 NeedFrameFor(nsIFrame*   aParentFrame,
              nsIContent* aChildContent) 
 {