diff --git a/m4/ac_path_generic.m4 b/m4/ac_path_generic.m4
index fc31281f2..b7a2c130d 100644
--- a/m4/ac_path_generic.m4
+++ b/m4/ac_path_generic.m4
@@ -35,9 +35,11 @@ pushdef([DOWN], translit([$1], [A-Z], [a-z]))dnl
 dnl
 dnl Get the cflags and libraries from the LIBRARY-config script
 dnl
-AC_ARG_WITH(DOWN-prefix,[  --with-]DOWN[-prefix=PFX       Prefix where $1 is installed (optional)],
+AC_ARG_WITH(DOWN-prefix,
+        [  --with-]DOWN[-prefix=PFX       Prefix where $1 is installed (optional)],
         DOWN[]_config_prefix="$withval", DOWN[]_config_prefix="")
-AC_ARG_WITH(DOWN-exec-prefix,[  --with-]DOWN[-exec-prefix=PFX Exec prefix where $1 is installed (optional)],
+AC_ARG_WITH(DOWN-exec-prefix,
+        [  --with-]DOWN[-exec-prefix=PFX  Exec prefix where $1 is installed (optional)],
         DOWN[]_config_exec_prefix="$withval", DOWN[]_config_exec_prefix="")
 
   if test x$DOWN[]_config_exec_prefix != x ; then