diff --git a/src/js/storyJS.tw b/src/js/storyJS.tw
index a3073e82f3a152129ffbdb8bb83a82d6425458ed..ecaf157acba3ee107f13ac6b11f87a15f88c6754 100644
--- a/src/js/storyJS.tw
+++ b/src/js/storyJS.tw
@@ -926,8 +926,10 @@ window.mergeRules = function(rules) {
             );
 
             if (applies)
-            {
-                combinedRule[prop] = rules[i][prop];
+            {	
+
+            	if ("object" != typeof combinedRule[prop])
+                	combinedRule[prop] = rules[i][prop];
             
             	/*Some properties of rules now have second level properties. We need to check it, and change ones in combinedRule. (Good example - growth drugs. Breasts, butt, etc...) */
             	if ( "object" == typeof rules[i][prop])