diff --git a/scd4x/scd4x.go b/scd4x/scd4x.go
index 2fa435d..14128fe 100644
--- a/scd4x/scd4x.go
+++ b/scd4x/scd4x.go
@@ -313,7 +313,7 @@ func (d *Dev) SetConfiguration(newCfg *DevConfig) error {
 
 	if currentConfig.ASCInitialPeriod != newCfg.ASCInitialPeriod {
 		if newCfg.ASCInitialPeriod%4 != 0 {
-			return fmt.Errorf("scd4x: invalid initial period %d. must be a mulitple of 4", newCfg.ASCInitialPeriod)
+			return fmt.Errorf("scd4x: invalid initial period %d. must be a multiple of 4", newCfg.ASCInitialPeriod)
 		}
 		w[0] = uint16(newCfg.ASCInitialPeriod / time.Hour)
 		_, err := d.sendCommand(cmdSetASCInitialPeriod, w)
@@ -324,7 +324,7 @@ func (d *Dev) SetConfiguration(newCfg *DevConfig) error {
 
 	if currentConfig.ASCStandardPeriod != newCfg.ASCStandardPeriod {
 		if newCfg.ASCStandardPeriod%4 != 0 {
-			return fmt.Errorf("scd4x: invalid standard period %d. must be a mulitple of 4", newCfg.ASCStandardPeriod)
+			return fmt.Errorf("scd4x: invalid standard period %d. must be a multiple of 4", newCfg.ASCStandardPeriod)
 		}
 		w[0] = uint16(newCfg.ASCStandardPeriod / time.Hour)
 		_, err := d.sendCommand(cmdSetASCStandardPeriod, w)
diff --git a/scd4x/scd4x_test.go b/scd4x/scd4x_test.go
index 0f31f3a..76bc555 100644
--- a/scd4x/scd4x_test.go
+++ b/scd4x/scd4x_test.go
@@ -334,7 +334,7 @@ func TestGetSetConfiguration(t *testing.T) {
 // SCDRESET. Running this test will destructively clear customized values
 // previously programmed into the device.
 func TestPersistAndResetFactory(t *testing.T) {
-	if liveDevice && os.Getenv("SCDRESET") == "" {
+	if !liveDevice || os.Getenv("SCDRESET") == "" {
 		t.Skip("using live device and SCDRESET not defined. skipping")
 	}
 	dev, err := getDev(t)