diff --git a/intl/uconv/util/unicpriv.h b/intl/uconv/util/unicpriv.h
index 2f03bb4104bf..d69e8f7c3df9 100644
--- a/intl/uconv/util/unicpriv.h
+++ b/intl/uconv/util/unicpriv.h
@@ -40,7 +40,6 @@
 #include "ubase.h"
 #include "umap.h"
 #include "uconvutil.h"
-#include "nsComObsolete.h"
 
 #ifdef __cplusplus
 extern "C" {