diff --git a/src/interpreter/mod.rs b/src/interpreter/mod.rs
index 8cd6613..be06ec2 100644
--- a/src/interpreter/mod.rs
+++ b/src/interpreter/mod.rs
@@ -58,8 +58,6 @@ pub enum Error {
 	Value(String),
 	/// Interpreter (code) error.
 	Interpreter(String),
-	/// Env module error.
-	Env(String),
 	/// Native module error.
 	Native(String),
 	/// Trap.
@@ -83,7 +81,6 @@ impl Into<String> for Error {
 			Error::Stack(s) => s,
 			Error::Interpreter(s) => s,
 			Error::Value(s) => s,
-			Error::Env(s) => s,
 			Error::Native(s) => s,
 			Error::Trap(s) => format!("trap: {}", s),
 			Error::User(e) => format!("user: {}", e),
@@ -106,7 +103,6 @@ impl ::std::fmt::Display for Error {
 			Error::Stack(ref s) => write!(f, "Stack: {}", s),
 			Error::Interpreter(ref s) => write!(f, "Interpreter: {}", s),
 			Error::Value(ref s) => write!(f, "Value: {}", s),
-			Error::Env(ref s) => write!(f, "Env: {}", s),
 			Error::Native(ref s) => write!(f, "Native: {}", s),
 			Error::Trap(ref s) => write!(f, "Trap: {}", s),
 			Error::User(ref e) => write!(f, "User: {}", e),