diff --git a/src/main/java/com/clevercloud/biscuit/token/builder/parser/ExpressionParser.java b/src/main/java/com/clevercloud/biscuit/token/builder/parser/ExpressionParser.java
index 087bd0fa..b5670c79 100644
--- a/src/main/java/com/clevercloud/biscuit/token/builder/parser/ExpressionParser.java
+++ b/src/main/java/com/clevercloud/biscuit/token/builder/parser/ExpressionParser.java
@@ -261,8 +261,6 @@ public static Either<Error, Tuple2<String, Expression>> unary(String s) {
             }
 
             Tuple2<String, Expression> t = res.get();
-
-            s = space(s.substring(1));
             return Either.right(new Tuple2<>(t._1,  t._2));
         }