diff --git a/src/error.rs b/src/error.rs
index 827c781..b932465 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -167,11 +167,11 @@ impl From<FromSqlError> for Error {
         match err {
             FromSqlError::OutOfRange(val) => Error::IntegralValueOutOfRange(UNKNOWN_COLUMN, val),
             #[cfg(feature = "i128_blob")]
-            FromSqlError::InvalidI128Size(s) => {
+            FromSqlError::InvalidI128Size(_) => {
                 Error::FromSqlConversionFailure(UNKNOWN_COLUMN, Type::Blob, Box::new(err))
             }
             #[cfg(feature = "uuid")]
-            FromSqlError::InvalidUuidSize(s) => {
+            FromSqlError::InvalidUuidSize(_) => {
                 Error::FromSqlConversionFailure(UNKNOWN_COLUMN, Type::Blob, Box::new(err))
             }
             FromSqlError::Other(source) => {