diff --git a/src/vs/workbench/parts/debug/browser/media/repl.css b/src/vs/workbench/parts/debug/browser/media/repl.css
index da25304d6af..bf336af2f63 100644
--- a/src/vs/workbench/parts/debug/browser/media/repl.css
+++ b/src/vs/workbench/parts/debug/browser/media/repl.css
@@ -9,6 +9,7 @@
 	height: 100%;
 	position: relative;
 	box-sizing: border-box;
+	overflow: hidden;
 }
 
 .monaco-workbench .repl .surveyor {