diff --git a/content/xslt/src/xpath/txExpr.h b/content/xslt/src/xpath/txExpr.h
index 64e11b86248f..db6f7387bbc2 100644
--- a/content/xslt/src/xpath/txExpr.h
+++ b/content/xslt/src/xpath/txExpr.h
@@ -994,7 +994,7 @@ private:
 class txUnionNodeTest : public txNodeTest
 {
 public:
-    ~txUnionNodeTest()
+    ~txUnionNodeTest();
 
     nsresult addNodeTest(txNodeTest* aNodeTest);