diff --git a/src/cec.rs b/src/cec.rs
index 2f3191e..82994ab 100644
--- a/src/cec.rs
+++ b/src/cec.rs
@@ -6,7 +6,7 @@
  * SPDX-License-Identifier: MIT
  */
 
-use anyhow::{bail, Error, Result};
+use anyhow::{anyhow, bail, Error, Result};
 use std::fmt;
 use std::str::FromStr;
 use zbus::Connection;
@@ -21,13 +21,13 @@ pub enum HdmiCecState {
 }
 
 impl TryFrom<u32> for HdmiCecState {
-    type Error = String;
+    type Error = Error;
     fn try_from(v: u32) -> Result<Self, Self::Error> {
         match v {
             x if x == HdmiCecState::Disabled as u32 => Ok(HdmiCecState::Disabled),
             x if x == HdmiCecState::ControlOnly as u32 => Ok(HdmiCecState::ControlOnly),
             x if x == HdmiCecState::ControlAndWake as u32 => Ok(HdmiCecState::ControlAndWake),
-            _ => Err(format!("No enum match for value {v}")),
+            _ => Err(anyhow!("No enum match for value {v}")),
         }
     }
 }
diff --git a/src/hardware.rs b/src/hardware.rs
index 7baf308..1c222ea 100644
--- a/src/hardware.rs
+++ b/src/hardware.rs
@@ -5,7 +5,7 @@
  * SPDX-License-Identifier: MIT
  */
 
-use anyhow::{bail, Error, Result};
+use anyhow::{anyhow, bail, Error, Result};
 use std::fmt;
 use std::str::FromStr;
 use tokio::fs;
@@ -52,7 +52,7 @@ impl FromStr for HardwareVariant {
 }
 
 impl TryFrom<u32> for HardwareCurrentlySupported {
-    type Error = String;
+    type Error = anyhow::Error;
     fn try_from(v: u32) -> Result<Self, Self::Error> {
         match v {
             x if x == HardwareCurrentlySupported::Unknown as u32 => {
@@ -64,7 +64,7 @@ impl TryFrom<u32> for HardwareCurrentlySupported {
             x if x == HardwareCurrentlySupported::Supported as u32 => {
                 Ok(HardwareCurrentlySupported::Supported)
             }
-            _ => Err(format!("No enum match for value {v}")),
+            _ => Err(anyhow!("No enum match for value {v}")),
         }
     }
 }
@@ -80,12 +80,12 @@ impl fmt::Display for HardwareCurrentlySupported {
 }
 
 impl TryFrom<u32> for FanControlState {
-    type Error = String;
+    type Error = Error;
     fn try_from(v: u32) -> Result<Self, Self::Error> {
         match v {
             x if x == FanControlState::Bios as u32 => Ok(FanControlState::Bios),
             x if x == FanControlState::Os as u32 => Ok(FanControlState::Os),
-            _ => Err(format!("No enum match for value {v}")),
+            _ => Err(anyhow!("No enum match for value {v}")),
         }
     }
 }
diff --git a/src/testing.rs b/src/testing.rs
index cc5399c..30c3bb4 100644
--- a/src/testing.rs
+++ b/src/testing.rs
@@ -34,7 +34,7 @@ macro_rules! enum_roundtrip {
     };
     ($enum:ident => $value:literal : $ty:ty = $variant:ident) => {
         assert_eq!($enum::$variant as $ty, $value);
-        assert_eq!($enum::try_from($value), Ok($enum::$variant));
+        assert_eq!($enum::try_from($value).unwrap(), $enum::$variant);
     };
 
     ($enum:ident { $($value:literal : $ty:ident = $variant:ident,)+ }) => {
diff --git a/src/wifi.rs b/src/wifi.rs
index 963c30e..dc013bc 100644
--- a/src/wifi.rs
+++ b/src/wifi.rs
@@ -5,7 +5,7 @@
  * SPDX-License-Identifier: MIT
  */
 
-use anyhow::{bail, ensure, Result};
+use anyhow::{anyhow, bail, ensure, Error, Result};
 use std::str::FromStr;
 use strum::{Display, EnumString};
 use tokio::fs;
@@ -75,34 +75,34 @@ pub enum WifiBackend {
 }
 
 impl TryFrom<u32> for WifiDebugMode {
-    type Error = String;
+    type Error = Error;
     fn try_from(v: u32) -> Result<Self, Self::Error> {
         match v {
             x if x == WifiDebugMode::Off as u32 => Ok(WifiDebugMode::Off),
             x if x == WifiDebugMode::Tracing as u32 => Ok(WifiDebugMode::Tracing),
-            _ => Err(format!("No enum match for value {v}")),
+            _ => Err(anyhow!("No enum match for value {v}")),
         }
     }
 }
 
 impl TryFrom<u32> for WifiPowerManagement {
-    type Error = String;
+    type Error = Error;
     fn try_from(v: u32) -> Result<Self, Self::Error> {
         match v {
             x if x == WifiPowerManagement::Disabled as u32 => Ok(WifiPowerManagement::Disabled),
             x if x == WifiPowerManagement::Enabled as u32 => Ok(WifiPowerManagement::Enabled),
-            _ => Err(format!("No enum match for value {v}")),
+            _ => Err(anyhow!("No enum match for value {v}")),
         }
     }
 }
 
 impl TryFrom<u32> for WifiBackend {
-    type Error = String;
+    type Error = Error;
     fn try_from(v: u32) -> Result<Self, Self::Error> {
         match v {
             x if x == WifiBackend::Iwd as u32 => Ok(WifiBackend::Iwd),
             x if x == WifiBackend::WPASupplicant as u32 => Ok(WifiBackend::WPASupplicant),
-            _ => Err(format!("No enum match for WifiBackend value {v}")),
+            _ => Err(anyhow!("No enum match for WifiBackend value {v}")),
         }
     }
 }