diff --git a/test/Feature/llvm2cpp.ll b/test/Feature/llvm2cpp.ll
index 095bd993ab2..63d3402f179 100644
--- a/test/Feature/llvm2cpp.ll
+++ b/test/Feature/llvm2cpp.ll
@@ -1,5 +1,5 @@
 ; RUN: llvm-as < %s | llvm-dis > %t1.ll
-; RUN: llvm-as < %s | llvm2cpp -gen-program -o %t2.cpp -
+; RUN: llvm-as < %s | llvm2cpp -gen-program -o %t2.cpp - -f
 ; RUN: %link -o %t2.exe %t2.cpp -lLLVMCore -lLLVMSupport -lLLVMbzip2 -lLLVMSystem -lstdc++
 ; RUN: %t2.exe > %t2.ll
 ; RUN: diff %t1.ll %t2.ll