diff --git a/mozilla/content/html/document/src/nsHTMLDocument.cpp b/mozilla/content/html/document/src/nsHTMLDocument.cpp
index 76ac05ca1a0..9fc3170828c 100644
--- a/mozilla/content/html/document/src/nsHTMLDocument.cpp
+++ b/mozilla/content/html/document/src/nsHTMLDocument.cpp
@@ -1089,7 +1089,7 @@ nsHTMLDocument::GetBaseURL(nsIURI*& aURL) const
 }
 
 NS_IMETHODIMP
-nsHTMLDocument::GetBaseTarget(nsAWritableString& aTarget) const
+nsHTMLDocument::GetBaseTarget(nsAWritableString& aTarget)
 {
   if (nsnull != mBaseTarget) {
     aTarget.Assign(*mBaseTarget);
diff --git a/mozilla/content/html/document/src/nsHTMLDocument.h b/mozilla/content/html/document/src/nsHTMLDocument.h
index 8c975fd3d5e..22a3858f695 100644
--- a/mozilla/content/html/document/src/nsHTMLDocument.h
+++ b/mozilla/content/html/document/src/nsHTMLDocument.h
@@ -91,7 +91,7 @@ public:
   NS_IMETHOD GetCSSLoader(nsICSSLoader*& aLoader);
 
   NS_IMETHOD GetBaseURL(nsIURI*& aURL) const;
-  NS_IMETHOD GetBaseTarget(nsAWritableString& aTarget) const;
+  NS_IMETHOD GetBaseTarget(nsAWritableString& aTarget);
   NS_IMETHOD SetBaseTarget(const nsAReadableString& aTarget);
 
   NS_IMETHOD SetLastModified(const nsAReadableString& aLastModified);