diff --git a/src/js/contentscript-start.js b/src/js/contentscript-start.js
index b6bf3bfbb..bf8670d9f 100644
--- a/src/js/contentscript-start.js
+++ b/src/js/contentscript-start.js
@@ -133,12 +133,9 @@ var injectScripts = function(scripts) {
     if ( !parent ) {
         return;
     }
-    var i = scripts.length, scriptTag;
-    while ( i-- ) {
-        scriptTag = document.createElement('script');
-        scriptTag.appendChild(document.createTextNode(scripts[i]));
-        parent.appendChild(scriptTag);
-    }
+    var scriptTag = document.createElement('script');
+    scriptTag.appendChild(document.createTextNode(scripts));
+    parent.appendChild(scriptTag);
 };
 
 /******************************************************************************/
@@ -156,7 +153,7 @@ var filteringHandler = function(details) {
         if ( details.netHide.length !== 0 ) {
             netFilters(details);
         }
-        if ( Array.isArray(details.scripts) ) {
+        if ( details.scripts ) {
             injectScripts(details.scripts);
         }
         // The port will never be used again at this point, disconnecting allows
diff --git a/src/js/cosmetic-filtering.js b/src/js/cosmetic-filtering.js
index c8ef1765f..16eecb5d1 100644
--- a/src/js/cosmetic-filtering.js
+++ b/src/js/cosmetic-filtering.js
@@ -1131,7 +1131,7 @@ FilterContainer.prototype.retrieveScriptTags = function(domain, hostname) {
             }
         }
     }
-    return out;
+    return out.join('\n');
 };
 
 /******************************************************************************/