diff --git a/lib/pbxProject.js b/lib/pbxProject.js
index 9a2f5ed..feacd4b 100644
--- a/lib/pbxProject.js
+++ b/lib/pbxProject.js
@@ -1164,7 +1164,7 @@ pbxProject.prototype.addToLibrarySearchPaths = function(file) {
     for (config in configurations) {
         buildSettings = configurations[config].buildSettings;
 
-        if (unquote(buildSettings['PRODUCT_NAME']) != this.productName)
+        if (typeof(unquote(buildSettings['PRODUCT_NAME'])) == "undefined")
             continue;
 
         if (!buildSettings['LIBRARY_SEARCH_PATHS']