diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 07c2fd15bc0045f2e432020dcf6757293a14a11e..a4164ff9c9b4bce04f03868b56f32cf74b957274 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -19,6 +19,7 @@
 #include "cmLocalGenerator.h"
 #include "cmCommands.h"
 #include "cmState.h"
+#include "cmOutputConverter.h"
 #include "cmFunctionBlocker.h"
 #include "cmListFileCache.h"
 #include "cmCommandArgumentParserHelper.h"