diff --git a/src/getClassName.js b/src/getClassName.js
index 24f2e49..2b5b53f 100644
--- a/src/getClassName.js
+++ b/src/getClassName.js
@@ -56,7 +56,7 @@ export default (styleNameValue: string, styleModuleImportMap: StyleModuleImportM
       const styleModuleMap: StyleModuleMapType = styleModuleImportMap[styleModuleImportMapKeys[0]];
 
       if (!styleModuleMap[styleName]) {
-        throw new Error('CSS module cannot be resolved.');
+        throw new Error('Could not resolve the styleName \'' + styleName + '\'.');
       }
 
       return styleModuleMap[styleName];