diff --git a/application/application-common.ts b/application/application-common.ts
index 117c305f4..ec4ac8e66 100644
--- a/application/application-common.ts
+++ b/application/application-common.ts
@@ -38,10 +38,12 @@ export var ios = undefined;
 export function loadCss() {
     if (definition.cssFile) {
         var cssFileName = fs.path.join(fs.knownFolders.currentApp().path, definition.cssFile);
-        var applicationCss;
         if (fs.File.exists(cssFileName)) {
             var file = fs.File.fromPath(cssFileName);
-            definition.cssSelectorsCache = styleScope.StyleScope.createSelectorsFromCss(file.readTextSync(), cssFileName);
+            var applicationCss = file.readTextSync();
+            if (applicationCss) {
+                definition.cssSelectorsCache = styleScope.StyleScope.createSelectorsFromCss(applicationCss, cssFileName);
+            }
         }
     }
 }
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