diff --git a/public/src/modules/helpers.js b/public/src/modules/helpers.js
index a0201ed6cc..d9bc514aa3 100644
--- a/public/src/modules/helpers.js
+++ b/public/src/modules/helpers.js
@@ -57,19 +57,22 @@
 	helpers.generateCategoryBackground = function(category) {
 		var style = [];
 
-		if (category.backgroundImage) {
-			style.push('background-image: url(' + category.backgroundImage + ')');
-		}
-
 		if (category.bgColor) {
-			style.push('background-color: ' + category.bgColor + ';');
+			style.push('background-color: ' + category.bgColor);
 		}
 
 		if (category.color) {
-			style.push('color: ' + category.color + ';');
+			style.push('color: ' + category.color);
 		}
 
-		return style.join(' ');
+		if (category.backgroundImage) {
+			style.push('background-image: url(' + category.backgroundImage + ')');
+			if (category.imageClass) {
+				style.push('background-size: ' + category.imageClass);
+			}
+		}
+
+		return style.join('; ') + ';';
 	};
 
 	helpers.generateTopicClass = function(topic) {