diff --git a/Cargo.lock b/Cargo.lock
index 1ccae26..9689411 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -490,6 +490,7 @@ name = "ucg"
 version = "0.6.4"
 dependencies = [
  "abortable_parser 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "bencher 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.26.2 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index 19efb83..8690348 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,6 +31,7 @@ regex = "1"
 dirs = "1.0.4"
 unicode-segmentation = "1.2.1"
 rustyline = "4.1.0"
+atty = "0.2"
 
 [build-dependencies]
 walkdir = "2.2.7"
diff --git a/src/build/mod.rs b/src/build/mod.rs
index f71f3c4..8836345 100644
--- a/src/build/mod.rs
+++ b/src/build/mod.rs
@@ -26,6 +26,8 @@ use std::rc::Rc;
 
 use rustyline;
 use rustyline::error::ReadlineError;
+use atty;
+use atty::Stream;
 use simple_error;
 
 use crate::ast::*;
@@ -214,10 +216,12 @@ where
 
     pub fn repl(&mut self, mut editor: rustyline::Editor<()>, config_home: PathBuf) -> BuildResult {
         // loop
-        let mut lines = crate::io::StatementAccumulator::new();
-        println!("Welcome to the UCG repl. Ctrl-D to exit, Ctrl-C to abort expression.");
-        println!("Type '#help' for help.");
-        println!("");
+		let mut lines = crate::io::StatementAccumulator::new();
+		if atty::is(Stream::Stdin) {
+        	println!("Welcome to the UCG repl. Ctrl-D to exit, Ctrl-C to abort expression.");
+        	println!("Type '#help' for help.");
+        	println!("");
+		}
         // Initialize VM with an empty OpPointer
         let mut vm = VM::new(
             self.strict,