diff --git a/llvm/extra.cpp b/llvm/extra.cpp
index e2d1e12..2463672 100644
--- a/llvm/extra.cpp
+++ b/llvm/extra.cpp
@@ -39,6 +39,7 @@
 #include <cstdlib>
 #include <cstring>
 #include <sstream>
+#include <cstdio>
 
 // LLVM includes
 #include "llvm/LLVMContext.h"