diff --git a/lib/src/kvs/file/mod.rs b/lib/src/kvs/file/mod.rs
index 28e2a707..1d46a2e2 100644
--- a/lib/src/kvs/file/mod.rs
+++ b/lib/src/kvs/file/mod.rs
@@ -172,9 +172,9 @@ impl Transaction {
 			return Err(Error::TxReadonly);
 		}
 		// Remove the key
-		let res = self.tx.del(key.into())?;
+		self.tx.del(key.into())?;
 		// Return result
-		Ok(res)
+		Ok(())
 	}
 	// Delete a key
 	pub fn delc<K, V>(&mut self, key: K, chk: Option<V>) -> Result<(), Error>
@@ -191,9 +191,9 @@ impl Transaction {
 			return Err(Error::TxReadonly);
 		}
 		// Remove the key
-		let res = self.tx.delc(key.into(), chk.map(|v| v.into()))?;
+		self.tx.delc(key.into(), chk.map(|v| v.into()))?;
 		// Return result
-		Ok(res)
+		Ok(())
 	}
 	// Retrieve a range of keys from the databases
 	pub fn scan<K>(&mut self, rng: Range<K>, limit: u32) -> Result<Vec<(Key, Val)>, Error>
diff --git a/lib/src/kvs/mem/mod.rs b/lib/src/kvs/mem/mod.rs
index 2f010f63..994d85bc 100644
--- a/lib/src/kvs/mem/mod.rs
+++ b/lib/src/kvs/mem/mod.rs
@@ -172,9 +172,9 @@ impl Transaction {
 			return Err(Error::TxReadonly);
 		}
 		// Remove the key
-		let res = self.tx.del(key.into())?;
+		self.tx.del(key.into())?;
 		// Return result
-		Ok(res)
+		Ok(())
 	}
 	// Delete a key
 	pub fn delc<K, V>(&mut self, key: K, chk: Option<V>) -> Result<(), Error>
@@ -191,9 +191,9 @@ impl Transaction {
 			return Err(Error::TxReadonly);
 		}
 		// Remove the key
-		let res = self.tx.delc(key.into(), chk.map(|v| v.into()))?;
+		self.tx.delc(key.into(), chk.map(|v| v.into()))?;
 		// Return result
-		Ok(res)
+		Ok(())
 	}
 	// Retrieve a range of keys from the databases
 	pub fn scan<K>(&mut self, rng: Range<K>, limit: u32) -> Result<Vec<(Key, Val)>, Error>
diff --git a/lib/src/sql/array.rs b/lib/src/sql/array.rs
index cf0b5b19..269b24e9 100644
--- a/lib/src/sql/array.rs
+++ b/lib/src/sql/array.rs
@@ -40,7 +40,7 @@ impl From<Vec<i32>> for Array {
 	}
 }
 
-impl<'a> From<Vec<&str>> for Array {
+impl From<Vec<&str>> for Array {
 	fn from(v: Vec<&str>) -> Self {
 		Array(v.into_iter().map(Value::from).collect())
 	}
diff --git a/lib/src/sql/value/value.rs b/lib/src/sql/value/value.rs
index 3844cd40..4a97e206 100644
--- a/lib/src/sql/value/value.rs
+++ b/lib/src/sql/value/value.rs
@@ -372,7 +372,7 @@ impl From<Operation> for Value {
 	}
 }
 
-impl<'a> From<Vec<&str>> for Value {
+impl From<Vec<&str>> for Value {
 	fn from(v: Vec<&str>) -> Self {
 		Value::Array(Array::from(v))
 	}