diff --git a/mozilla/content/html/style/src/nsCSSRules.cpp b/mozilla/content/html/style/src/nsCSSRules.cpp
index 7c3ae5ca280..6bbeb074b62 100644
--- a/mozilla/content/html/style/src/nsCSSRules.cpp
+++ b/mozilla/content/html/style/src/nsCSSRules.cpp
@@ -758,7 +758,7 @@ CloneRuleInto(nsISupports* aRule, void* aArray)
   return PR_TRUE;
 }
 
-PR_STATIC_CALLBACK(PRBool)
+static PRBool
 SetParentRuleReference(nsISupports* aRule, void* aParentRule)
 {
   nsICSSRule* rule = (nsICSSRule*)aRule;
diff --git a/mozilla/layout/style/nsCSSRules.cpp b/mozilla/layout/style/nsCSSRules.cpp
index 7c3ae5ca280..6bbeb074b62 100644
--- a/mozilla/layout/style/nsCSSRules.cpp
+++ b/mozilla/layout/style/nsCSSRules.cpp
@@ -758,7 +758,7 @@ CloneRuleInto(nsISupports* aRule, void* aArray)
   return PR_TRUE;
 }
 
-PR_STATIC_CALLBACK(PRBool)
+static PRBool
 SetParentRuleReference(nsISupports* aRule, void* aParentRule)
 {
   nsICSSRule* rule = (nsICSSRule*)aRule;