diff --git a/src/eww_state.rs b/src/eww_state.rs
index 5674722..b8f67c2 100644
--- a/src/eww_state.rs
+++ b/src/eww_state.rs
@@ -36,7 +36,7 @@ impl StateChangeHandler {
                 util::print_result_err("while updating UI based after state change", &result);
             }
             Err(err) => {
-                eprintln!("Error whiel resolving attributes {:?}", err);
+                eprintln!("Error while resolving attributes: {:?}", err);
             }
         }
     }
diff --git a/src/script_var_handler.rs b/src/script_var_handler.rs
index 52ffb2d..4f7cd35 100644
--- a/src/script_var_handler.rs
+++ b/src/script_var_handler.rs
@@ -122,6 +122,7 @@ impl ScriptVarHandler {
                             ))?;
                         } else if event.hangup {
                             command_out_handles.remove(var_name);
+                            sources.unregister(var_name);
                         }
                     }
                 };
diff --git a/src/value/attr_value.rs b/src/value/attr_value.rs
index 2360733..6838bf4 100644
--- a/src/value/attr_value.rs
+++ b/src/value/attr_value.rs
@@ -154,14 +154,14 @@ mod test {
     use pretty_assertions::assert_eq;
     #[test]
     fn test_parse_string_or_var_ref_list() {
-        let input = "{{foo}}{{bar}}b{}az{{bat}}{}quok{{test}}";
+        let input = "{{foo}}{{bar}}b{}azb{a}z{{bat}}{}quok{{test}}";
         let output = AttrValue::parse_string(input);
         assert_eq!(
             output,
             AttrValue(vec![
                 AttrValueElement::VarRef(VarName("foo".to_owned())),
                 AttrValueElement::VarRef(VarName("bar".to_owned())),
-                AttrValueElement::primitive("b{}az".to_owned()),
+                AttrValueElement::primitive("b{}azb{a}z".to_owned()),
                 AttrValueElement::VarRef(VarName("bat".to_owned())),
                 AttrValueElement::primitive("{}quok".to_owned()),
                 AttrValueElement::VarRef(VarName("test".to_owned())),