diff --git a/src/vs/workbench/services/themes/electron-browser/themeService.ts b/src/vs/workbench/services/themes/electron-browser/themeService.ts
index 654d39a7e88e7a945b45b7769e4311feb167433b..9be5cff8b6c494e21621248c909eea50450e60a4 100644
--- a/src/vs/workbench/services/themes/electron-browser/themeService.ts
+++ b/src/vs/workbench/services/themes/electron-browser/themeService.ts
@@ -534,7 +534,7 @@ function _processIconThemeDocument(id: string, iconThemeDocumentPath: string, ic
 	}
 	collectSelectors(iconThemeDocument);
 	collectSelectors(iconThemeDocument.light, '.vs');
-	collectSelectors(iconThemeDocument.highContrast, '.hc_black');
+	collectSelectors(iconThemeDocument.highContrast, '.hc-black');
 
 	let cssRules: string[] = [];