diff --git a/include/llvm/Assembly/PrintModulePass.h b/include/llvm/Assembly/PrintModulePass.h
index fbab4e4a450..2d63e6d74f1 100644
--- a/include/llvm/Assembly/PrintModulePass.h
+++ b/include/llvm/Assembly/PrintModulePass.h
@@ -31,6 +31,10 @@ public:
     (*Out) << M;
     return false;
   }
+
+  virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+    AU.setPreservesAll();
+  }
 };
 
 class PrintFunctionPass : public FunctionPass {
@@ -54,6 +58,10 @@ public:
     (*Out) << Banner << (Value*)F;
     return false;
   }
+  
+  virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+    AU.setPreservesAll();
+  }
 };
 
 #endif