diff --git a/configure.ac b/configure.ac
index ed5d281..eace19a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -14,8 +14,8 @@ AC_PROG_LN_S
 AC_PROG_RANLIB
 
 # Options
-AC_ARG_WITH(gtk,  [  --with-gtk              use GTK, which the GUIs require], USE_GTK=$enableval, USE_GTK=yes)
-AC_ARG_WITH(gimp, [  --with-gimp             use GIMP, for GIMP plugin support], USE_GIMP=$enableval, USE_GIMP=yes)
+AC_ARG_WITH(gtk,  [  --with/without-gtk      use GTK, which the GUIs require], USE_GTK=$enableval, USE_GTK=yes)
+AC_ARG_WITH(gimp, [  --with/without-gimp     use GIMP, for GIMP plugin support], USE_GIMP=$enableval, USE_GIMP=yes)
 
 # Checks for header files.
 AC_FUNC_ALLOCA