diff --git a/canvas_modules/common-canvas/src/common-properties/controls/controls.scss b/canvas_modules/common-canvas/src/common-properties/controls/controls.scss
index 94c1db987..d48a41705 100644
--- a/canvas_modules/common-canvas/src/common-properties/controls/controls.scss
+++ b/canvas_modules/common-canvas/src/common-properties/controls/controls.scss
@@ -44,6 +44,7 @@
 		display: flex;
 		> div:first-child {
 			width: 100%;
+			overflow-x: scroll;
 		}
 	}
 }