diff --git a/newlib/libc/string/Makefile.am b/newlib/libc/string/Makefile.am
index f8bd41e08..a21e3d55d 100644
--- a/newlib/libc/string/Makefile.am
+++ b/newlib/libc/string/Makefile.am
@@ -164,6 +164,6 @@ wmemcmp.def	wmemcpy.def	wmemmove.def	wmemset.def \
 memmem.def	memrchr.def	rawmemchr.def	strchrnul.def \
 strcasecmp_l.def strcoll_l.def	strncasecmp_l.def strxfrm_l.def \
 wcscasecmp_l.def wcscoll_l.def	wcsncasecmp_l.def wcsxfrm_l.def \
-strverscmp.def
+strverscmp.def	strnstr.def
 
 CHAPTERS = strings.tex wcstrings.tex
diff --git a/newlib/libc/string/Makefile.in b/newlib/libc/string/Makefile.in
index 6907eb2d1..13dee83e0 100644
--- a/newlib/libc/string/Makefile.in
+++ b/newlib/libc/string/Makefile.in
@@ -500,7 +500,7 @@ wmemcmp.def	wmemcpy.def	wmemmove.def	wmemset.def \
 memmem.def	memrchr.def	rawmemchr.def	strchrnul.def \
 strcasecmp_l.def strcoll_l.def	strncasecmp_l.def strxfrm_l.def \
 wcscasecmp_l.def wcscoll_l.def	wcsncasecmp_l.def wcsxfrm_l.def \
-strverscmp.def
+strverscmp.def	strnstr.def
 
 CHAPTERS = strings.tex wcstrings.tex
 all: all-am