diff --git a/src/lexer.rs b/src/lexer.rs
index 76fb93c..1ab9235 100644
--- a/src/lexer.rs
+++ b/src/lexer.rs
@@ -373,7 +373,7 @@ pub fn lex(input: &str) -> Result<TokenVector, String> {
           },
           _ => {
             // otherwise, Inch
-            tokens[token_index] = Token::Unit(InchOfMercury);
+            tokens[token_index] = Token::Unit(Inch);
           },
         }
       },