diff --git a/build.gradle.kts b/build.gradle.kts
index 755f7221..7407ebf6 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -111,8 +111,8 @@ tasks.dokkaHtml.configure {
 
 bintray {
 
-    user = project.findProperty("bintray.username") as String
-    key = project.findProperty("bintray.api_key") as String
+    user = project.findProperty("bintray.username") as? String ?: ""
+    key = project.findProperty("bintray.api_key") as? String ?: ""
 
     setPublications("KSpigot")