diff --git a/autoconf/m4/find_std_program.m4 b/autoconf/m4/find_std_program.m4
index 05d3bf77c8e..c789df8e641 100644
--- a/autoconf/m4/find_std_program.m4
+++ b/autoconf/m4/find_std_program.m4
@@ -64,7 +64,7 @@ elif test "${binval}" != "nada" ; then
             AC_SUBST(allcapsname()[_BIN],${binval})
             AC_SUBST(allcapsname()[_INC],${incval})
             AC_SUBST(allcapsname()[_LIB],${libval})
-            AC_SUBST([USE_]allcapsname(),[1])
+            AC_SUBST([USE_]allcapsname(),["USE_]allcapsname()[ = 1"])
             AC_MSG_RESULT([found via --with options])
           else
             AC_MSG_RESULT([failed])