diff --git a/Tools/Source/TianoTools/MakeDeps/MakeDeps.c b/Tools/Source/TianoTools/MakeDeps/MakeDeps.c
index a459348079..1a090b3bed 100755
--- a/Tools/Source/TianoTools/MakeDeps/MakeDeps.c
+++ b/Tools/Source/TianoTools/MakeDeps/MakeDeps.c
@@ -28,6 +28,7 @@ Abstract:
 #include <Base.h>
 #include <UEfiBaseTypes.h>
 #include "EfiUtilityMsgs.h"
+#include <CommonLib.h>
 
 //
 // Structure to maintain a linked list of strings