diff --git a/charger/config_test.go b/charger/config_test.go
index 7afea3a0c..69fbd2d85 100644
--- a/charger/config_test.go
+++ b/charger/config_test.go
@@ -21,6 +21,7 @@ func TestChargers(t *testing.T) {
 		"connect: connection refused",
 		"error connecting: Network Error",
 		"i/o timeout",
+		"(Client.Timeout exceeded while awaiting headers)",
 	}
 
 	for _, tmpl := range test.ConfigTemplates("charger") {
diff --git a/meter/config_test.go b/meter/config_test.go
index e917f2cbb..72afd617c 100644
--- a/meter/config_test.go
+++ b/meter/config_test.go
@@ -18,6 +18,8 @@ func TestMeters(t *testing.T) {
 		"connect: no route to host",
 		"connect: connection refused",
 		"i/o timeout",
+		"no ping response for 192.0.2.2", // SMA
+		"[1ESY1161052714 1ESY1161229249 1EMH0008842285 1ESY1161978584 1EMH0004864048 1ESY1161979033 7ELS8135823805]", // Discovergy
 	}
 
 	for _, tmpl := range test.ConfigTemplates("meter") {