diff --git a/debug/org.eclipse.debug.ui/css/e4-dark_debug_prefstyle.css b/debug/org.eclipse.debug.ui/css/e4-dark_debug_prefstyle.css
index 4194e84eb9f..7c13be148df 100644
--- a/debug/org.eclipse.debug.ui/css/e4-dark_debug_prefstyle.css
+++ b/debug/org.eclipse.debug.ui/css/e4-dark_debug_prefstyle.css
@@ -57,4 +57,5 @@ IEclipsePreferences#org-eclipse-debug-ui {
 
 #VariablesViewer {
     font-family: '#org-eclipse-debug-ui-VariableTextFont';
+    background-color: #2F2F2F;
 }