diff --git a/m4/jm-macros.m4 b/m4/jm-macros.m4
index 2ed57dcae..b2357f9a8 100644
--- a/m4/jm-macros.m4
+++ b/m4/jm-macros.m4
@@ -24,6 +24,7 @@ AC_DEFUN(jm_MACROS,
     fcntl.h \
     fenv.h \
     float.h \
+    langinfo.h \
     limits.h \
     memory.h \
     mntent.h \