diff --git a/gradle-plugin/src/main/kotlin/app/cash/better/dynamic/features/tasks/CheckExternalResourcesTask.kt b/gradle-plugin/src/main/kotlin/app/cash/better/dynamic/features/tasks/CheckExternalResourcesTask.kt
index 6548a9e..a4befde 100644
--- a/gradle-plugin/src/main/kotlin/app/cash/better/dynamic/features/tasks/CheckExternalResourcesTask.kt
+++ b/gradle-plugin/src/main/kotlin/app/cash/better/dynamic/features/tasks/CheckExternalResourcesTask.kt
@@ -119,7 +119,7 @@ abstract class CheckExternalResourcesTask : DefaultTask() {
         |
         |betterDynamicFeatures {
         |  externalResources {
-        |${missing.joinToString(separator = "\n") { "    style($it)" }}
+        |${missing.joinToString(separator = "\n") { "    style(\"$it\")" }}
         |  }
         |}
       """.trimMargin()
diff --git a/gradle-plugin/src/test/java/app/cash/better/dynamic/features/ResourceScanningTests.kt b/gradle-plugin/src/test/java/app/cash/better/dynamic/features/ResourceScanningTests.kt
index fe19398..4048923 100644
--- a/gradle-plugin/src/test/java/app/cash/better/dynamic/features/ResourceScanningTests.kt
+++ b/gradle-plugin/src/test/java/app/cash/better/dynamic/features/ResourceScanningTests.kt
@@ -65,7 +65,7 @@ class ResourceScanningTests {
       """
         |  betterDynamicFeatures {
         |    externalResources {
-        |      style(MyTheme)
+        |      style("MyTheme")
         |    }
         |  }
       """.trimMargin(),