diff --git a/circuitcompiler/lexer.go b/circuitcompiler/lexer.go
index 92bc45c..74340bb 100644
--- a/circuitcompiler/lexer.go
+++ b/circuitcompiler/lexer.go
@@ -32,7 +32,7 @@ const (
 var eof = rune(0)
 
 func isWhitespace(ch rune) bool {
-	return ch == ' ' || ch == '\t' || ch == '\n'
+	return ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r' || ch == '\v' || ch == '\f'
 }
 
 func isLetter(ch rune) bool {