diff --git a/src/tui/ui.rs b/src/tui/ui.rs
index 23eaccf..e681e08 100644
--- a/src/tui/ui.rs
+++ b/src/tui/ui.rs
@@ -354,17 +354,18 @@ struct Minibuffer<'a> {
 
 impl Minibuffer<'_> {
     fn paragraphs(state: &AppPublicState) -> Self {
-        match state {
+        let columns = 3;
+        let mb = match state {
             AppState::Browse(_) => Minibuffer {
                 paragraphs: vec![
                     Paragraph::new("m: show info overlay"),
                     Paragraph::new("g: show reload menu"),
                 ],
-                columns: 3,
+                columns,
             },
             AppState::Info(_) => Minibuffer {
                 paragraphs: vec![Paragraph::new("m: hide info overlay")],
-                columns: 3,
+                columns,
             },
             AppState::Reload(_) => Minibuffer {
                 paragraphs: vec![
@@ -372,17 +373,23 @@ impl Minibuffer<'_> {
                     Paragraph::new("d: reload database"),
                     Paragraph::new("l: reload library"),
                 ],
-                columns: 3,
+                columns,
             },
             AppState::Error(_) => Minibuffer {
-                paragraphs: vec![Paragraph::new("Press any key to dismiss the error message...")],
+                paragraphs: vec![Paragraph::new(
+                    "Press any key to dismiss the error message...",
+                )],
                 columns: 1,
             },
             AppState::Critical(_) => Minibuffer {
                 paragraphs: vec![Paragraph::new("Press ctrl+c to terminate the program...")],
                 columns: 1,
             },
-        }
+        };
+
+        // Callers will assume this.
+        assert!(mb.columns >= mb.paragraphs.len() as u16);
+        mb
     }
 }