diff --git a/site/src/components/Repl/Input/ModuleEditor.svelte b/site/src/components/Repl/Input/ModuleEditor.svelte
index 13f808bf8f..272066e84f 100644
--- a/site/src/components/Repl/Input/ModuleEditor.svelte
+++ b/site/src/components/Repl/Input/ModuleEditor.svelte
@@ -23,7 +23,7 @@
 
 	.editor {
 		height: 0;
-		flex: 1;
+		flex: 1 1 auto;
 	}
 
 	@media (min-width: 600px) {