diff --git a/testing/do-tests.in b/testing/do-tests.in
index 2e67e93671..27ad200fb9 100755
--- a/testing/do-tests.in
+++ b/testing/do-tests.in
@@ -343,6 +343,7 @@ do
 	#
 
 	$DIR/scripts/load-testconfig $testname
+	unset RADIUSHOSTS
 	source $TESTDIR/test.conf