diff --git a/src/vs/editor/contrib/hover/browser/modesGlyphHover.ts b/src/vs/editor/contrib/hover/browser/modesGlyphHover.ts
index eabfaf23f1dfcb41aa5d672efda65e8aaa35f2f3..75eeb5c7504cb80f2554f2e556a7db4a37898693 100644
--- a/src/vs/editor/contrib/hover/browser/modesGlyphHover.ts
+++ b/src/vs/editor/contrib/hover/browser/modesGlyphHover.ts
@@ -61,7 +61,7 @@ class MarginComputer implements IHoverComputer<IHoverMessage[]> {
 
 			let hoverMessage = d.options.glyphMarginHoverMessage;
 
-			if (!isEmptyMarkdownString(hoverMessage)) {
+			if (isEmptyMarkdownString(hoverMessage)) {
 				continue;
 			}