diff --git a/llvm/lib/Analysis/AliasDebugger.cpp b/llvm/lib/Analysis/AliasDebugger.cpp
index 6b534e9..76dfe07 100644
--- a/llvm/lib/Analysis/AliasDebugger.cpp
+++ b/llvm/lib/Analysis/AliasDebugger.cpp
@@ -41,10 +41,7 @@
     
   public:
     static char ID; // Class identification, replacement for typeinfo
-    AliasDebugger() : ModulePass((intptr_t)&ID) {}
-
-    /// isAnalysis - Return true if this pass is  implementing an analysis pass.
-    virtual bool isAnalysis() const { return true; }
+    AliasDebugger() : ModulePass((intptr_t)&ID, true) {}
 
     bool runOnModule(Module &M) {
       InitializeAliasAnalysis(this);                 // set up super class