diff --git a/m4/jm-macros.m4 b/m4/jm-macros.m4
index 33f9d83c..e6424331 100644
--- a/m4/jm-macros.m4
+++ b/m4/jm-macros.m4
@@ -89,7 +89,7 @@ AC_DEFUN(jm_MACROS,
 
   AC_REPLACE_FUNCS(strncasecmp)
   AC_REPLACE_FUNCS(stpcpy strstr strtol strtoul)
-  AC_REPLACE_FUNCS(memcmp)
+  AC_REPLACE_FUNCS(memcmp rpmatch)
 
   dnl used by e.g. intl/*domain.c and lib/canon-host.c
   AC_REPLACE_FUNCS(strdup)