diff --git a/tools/kotlin-native-gradle-plugin/build.gradle b/tools/kotlin-native-gradle-plugin/build.gradle
index 2fd0161fc95..b0c4805a599 100644
--- a/tools/kotlin-native-gradle-plugin/build.gradle
+++ b/tools/kotlin-native-gradle-plugin/build.gradle
@@ -167,8 +167,8 @@ bintray {
             name = project.version
             desc = "Kotlin Native Gradle plugin $konanVersion"
         }
-        publish  = project.findProperty("bintrayPublish")?.asBoolean() ?: false
-        override = project.findProperty("bintrayOverride")?.asBoolean() ?: false
+        publish  = project.findProperty("bintrayPublish").toString().toBoolean()
+        override = project.findProperty("bintrayOverride").toString().toBoolean()
     }
     publications = ['gradlePlugin']
 }