diff --git a/icu4c/source/common/rbbi.cpp b/icu4c/source/common/rbbi.cpp
index de6fc271be1..15c85cd2870 100644
--- a/icu4c/source/common/rbbi.cpp
+++ b/icu4c/source/common/rbbi.cpp
@@ -19,7 +19,6 @@
 #include "unicode/udata.h"
 #include "rbbidata.h"
 #include "rbbirb.h"
-#include "filestrm.h"
 #include "cmemory.h"
 #include "cstring.h"