diff --git a/input/src/input_dsl.rs b/input/src/input_dsl.rs
index cde5a15..4575e24 100644
--- a/input/src/input_dsl.rs
+++ b/input/src/input_dsl.rs
@@ -51,19 +51,19 @@ impl<'state, S, C: DslCommand<'state, S>, I: DslInput> KeyMap<'state, S, C, I> f
         while let Some(next) = iter.next() {
             match next {
                 Token { value: Value::Exp(0, exp_iter), .. } => {
-                    let mut exp_iter = exp_iter.clone();
-                    match exp_iter.next() {
+                    let mut e = exp_iter.clone();
+                    match e.next() {
                         Some(Token { value: Value::Sym(binding), .. }) => {
                             if input.matches_dsl(binding) {
-                                if let Some(command) = C::try_from_expr(state, &mut exp_iter) {
+                                if let Some(command) = C::try_from_expr(state, &mut e) {
                                     return Some(command)
                                 }
                             }
                         },
-                        _ => panic!("invalid config (expected symbol)")
+                        _ => panic!("invalid config (expected symbol, got: {exp_iter:?})")
                     }
                 },
-                _ => panic!("invalid config (expected expression)")
+                _ => panic!("invalid config (expected expression, got: {next:?})")
             }
         }
         None
diff --git a/output/src/view.rs b/output/src/view.rs
index f2e9ef4..484194d 100644
--- a/output/src/view.rs
+++ b/output/src/view.rs
@@ -54,7 +54,7 @@ pub trait ViewContext<'state, E: Output + 'state>: Send + Sync
         match value {
             Value::Sym(_) => self.get_content_sym(value),
             Value::Exp(_, _) => self.get_content_exp(value),
-            _ => panic!("only :symbols and (expressions) accepted here")
+            _ => panic!("only :symbols and (expressions) accepted here, got: {value:?}")
         }
     }
     fn get_content_sym <'source: 'state> (&'state self, value: &Value<'source>)