diff --git a/tools/include/tools/dis-asm-compat.h b/tools/include/tools/dis-asm-compat.h
index 70f331e23ed3..1e0586d8451b 100644
--- a/tools/include/tools/dis-asm-compat.h
+++ b/tools/include/tools/dis-asm-compat.h
@@ -2,6 +2,7 @@
 #ifndef _TOOLS_DIS_ASM_COMPAT_H
 #define _TOOLS_DIS_ASM_COMPAT_H
 
+#include <stdarg.h>
 #include <stdio.h>
 #include <dis-asm.h>