diff --git a/package.json b/package.json
index 30e05a5..801fa29 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "fwdekker.com",
-    "version": "0.40.2",
+    "version": "0.40.3",
     "description": "The source code of [my personal website](https://fwdekker.com/).",
     "author": "Felix W. Dekker",
     "browser": "dist/bundle.js",
diff --git a/src/main/js/Terminal.ts b/src/main/js/Terminal.ts
index 963f462..649f5cb 100644
--- a/src/main/js/Terminal.ts
+++ b/src/main/js/Terminal.ts
@@ -310,6 +310,8 @@ export class Terminal {
                 const inputChild = this.input.firstChild;
                 if (inputChild !== null)
                     setTimeout(() => moveCaretToEndOf(inputChild), 0);
+
+                event.preventDefault();
                 break;
             }
             case "arrowdown": {
@@ -319,6 +321,8 @@ export class Terminal {
                 const inputChild = this.input.firstChild;
                 if (inputChild !== null)
                     setTimeout(() => moveCaretToEndOf(inputChild), 0);
+
+                event.preventDefault();
                 break;
             }
             case "tab": {