diff --git a/devices/apa102/apa102.go b/devices/apa102/apa102.go
index a372e08..e0a874d 100644
--- a/devices/apa102/apa102.go
+++ b/devices/apa102/apa102.go
@@ -32,7 +32,7 @@ func ToRGB(p []color.NRGBA) []byte {
 // there's 32 bits sent per LED, creating a staggered effect. See
 // https://cpldcpu.wordpress.com/2014/11/30/understanding-the-apa102-superled/
 //
-// Temperature is in °Kelvin and a reasonable default value is 6500°K.
+// Temperature is in Kelvin and a reasonable default value is 6500K.
 //
 // As per APA102-C spec, the chip's max refresh rate is 400hz.
 // https://en.wikipedia.org/wiki/Flicker_fusion_threshold is a recommended
diff --git a/devices/bmxx80/bmx280smoketest/bmx280smoketest.go b/devices/bmxx80/bmx280smoketest/bmx280smoketest.go
index 3e72571..9d89639 100644
--- a/devices/bmxx80/bmx280smoketest/bmx280smoketest.go
+++ b/devices/bmxx80/bmx280smoketest/bmx280smoketest.go
@@ -175,7 +175,7 @@ func run(i2cBus i2c.Bus, i2cAddr uint16, spiPort spi.PortCloser) (err error) {
 	if delta.Temperature > 1000 || delta.Temperature < -1000 {
 		return fmt.Errorf("Temperature delta higher than expected (%s): I²C got %s; SPI got %s", delta.Temperature, i2cEnv.Temperature, spiEnv.Temperature)
 	}
-	// 0.1KPa
+	// 0.1kPa
 	if delta.Pressure > 100 || delta.Pressure < -100 {
 		return fmt.Errorf("Pressure delta higher than expected (%s): I²C got %s; SPI got %s", delta.Pressure, i2cEnv.Pressure, spiEnv.Pressure)
 	}
diff --git a/devices/lepton/cci/cci.go b/devices/lepton/cci/cci.go
index 338e622..48b8f89 100644
--- a/devices/lepton/cci/cci.go
+++ b/devices/lepton/cci/cci.go
@@ -132,7 +132,7 @@ type FFCMode struct {
 	ShutterTempLockoutState ShutterTempLockoutState // Default: ShutterTempLockoutStateInactive
 	ElapsedTimeSinceLastFFC time.Duration           // Uptime
 	DesiredFFCPeriod        time.Duration           // Default: 300s
-	DesiredFFCTempDelta     devices.Celsius         // Default: 3°C
+	DesiredFFCTempDelta     devices.Celsius         // Default: 3K
 	ImminentDelay           uint16                  // Default: 52
 	VideoFreezeDuringFFC    bool                    // Default: true
 	FFCDesired              bool                    // Default: false
diff --git a/devices/lepton/internal/internal.go b/devices/lepton/internal/internal.go
index a3d5f22..0895478 100644
--- a/devices/lepton/internal/internal.go
+++ b/devices/lepton/internal/internal.go
@@ -30,7 +30,7 @@ func (d DurationMS) ToD() time.Duration {
 	return time.Duration(d) * time.Millisecond
 }
 
-// CentiK is temperature in 0.01°K
+// CentiK is temperature in 0.01K
 //
 // It is an implementation detail of the protocol.
 type CentiK uint16
diff --git a/devices/lepton/lepton.go b/devices/lepton/lepton.go
index 13505e7..3e82008 100644
--- a/devices/lepton/lepton.go
+++ b/devices/lepton/lepton.go
@@ -48,7 +48,7 @@ type Metadata struct {
 	FFCTemp        devices.Celsius // Temperature at last internal calibration.
 	FFCTempHousing devices.Celsius //
 	FFCState       cci.FFCState    // Current calibration state.
-	FFCDesired     bool            // Asserted at start-up, after period (default 3m) or after temperature change (default 3°K). Indicates that a calibration should be triggered as soon as possible.
+	FFCDesired     bool            // Asserted at start-up, after period (default 3m) or after temperature change (default 3K). Indicates that a calibration should be triggered as soon as possible.
 	Overtemp       bool            // true 10s before self-shutdown.
 }
 
@@ -58,7 +58,7 @@ type Metadata struct {
 // Values centered around 8192 accorging to camera body temperature. Effective
 // range is 14 bits, so [0, 16383].
 //
-// Each 1 increment is approximatively 0.025°K.
+// Each 1 increment is approximatively 0.025K.
 type Frame struct {
 	*image.Gray16
 	Metadata Metadata // Metadata that is sent along the pixels.