diff --git a/include/common.h b/include/common.h
index 5439c46..670dad1 100644
--- a/include/common.h
+++ b/include/common.h
@@ -67,6 +67,7 @@ typedef unsigned long UNK_64;
 using std::cout;
 using std::string;
 using std::endl;
+using std::cerr;
 
 #endif