diff --git a/configure.in b/configure.in
index 5003e643a..bf0956c7e 100644
--- a/configure.in
+++ b/configure.in
@@ -156,8 +156,8 @@ if test "$with_krb4" != "no"; then
 	LIBS="$save_LIBS"
 	CFLAGS="$save_CFLAGS"
 	LIB_kdb="-lkdb -lkrb"
-	test_LIB_krb4="$LIB_krb4"
 	if test "$krb4_libdir"; then
+		test_LIB_krb4="-L $krb4_libdir"
 		LIB_krb4="-R $krb4_libdir $LIB_krb4"
 		LIB_kdb="-R $krb4_libdir -L$krb4_libdir $LIB_kdb"
 	fi