diff --git a/llvm_mode/afl-llvm-common.cc b/llvm_mode/afl-llvm-common.cc
index 9b7a444a..04dd9475 100644
--- a/llvm_mode/afl-llvm-common.cc
+++ b/llvm_mode/afl-llvm-common.cc
@@ -12,6 +12,7 @@
 #include <string>
 #include <fstream>
 
+#include <llvm/Support/raw_ostream.h>
 #include "afl-llvm-common.h"
 
 using namespace llvm;