diff --git a/i2c/src/main.rs b/i2c/src/main.rs
index 1bc391e..9c42395 100644
--- a/i2c/src/main.rs
+++ b/i2c/src/main.rs
@@ -29,8 +29,6 @@ type Result<T> = std::result::Result<T, Error>;
 pub(crate) enum Error {
     #[error("Invalid socket count: {0}")]
     SocketCountInvalid(usize),
-    #[error("Invalid device list")]
-    DeviceListInvalid,
     #[error("Duplicate adapter detected: {0}")]
     AdapterDuplicate(u32),
     #[error("Invalid client address: {0}")]
diff --git a/rng/src/vhu_rng.rs b/rng/src/vhu_rng.rs
index 31606c4..7facbb6 100644
--- a/rng/src/vhu_rng.rs
+++ b/rng/src/vhu_rng.rs
@@ -55,8 +55,6 @@ pub(crate) enum VuRngError {
     UnexpectedRngSourceError,
     #[error("Previous Time value is later than current time")]
     UnexpectedTimerValue,
-    #[error("Unexpected VirtQueue error")]
-    UnexpectedVirtQueueError,
 }
 
 impl convert::From<VuRngError> for io::Error {