diff --git a/tests/virsh-optparse b/tests/virsh-optparse
index 1aef8d8d95..090d6c205c 100755
--- a/tests/virsh-optparse
+++ b/tests/virsh-optparse
@@ -219,13 +219,13 @@ test -s out && fail=1
 compare exp-err err || fail=1
 
 # Numeric value with valid suffix
-virsh -q -c $test_url setmaxmem test 42MB >out 2>err || fail=1
+virsh -q -c $test_url setmaxmem test 42MB --config >out 2>err || fail=1
 test -s out && fail=1
 test -s err && fail=1
 
 # Numeric value bigger than INT_MAX. No failure here because
 # scaled numeric values are unsigned long long
-virsh -q -c $test_url setmaxmem test 2147483648 >out 2>err || fail=1
+virsh -q -c $test_url setmaxmem test 2147483648 --config >out 2>err || fail=1
 test -s out && fail=1
 test -s err && fail=1
 
@@ -248,7 +248,7 @@ test -s out && fail=1
 compare exp-err err || fail=1
 
 # Numeric value
-virsh -q -c $test_url setmaxmem test 42 >out 2>err || fail=1
+virsh -q -c $test_url setmaxmem test 42 --config >out 2>err || fail=1
 test -s out && fail=1
 test -s err && fail=1