diff --git a/convention/src/main/kotlin/io/gitlab/jfronny/scripts/SharedProps.kt b/convention/src/main/kotlin/io/gitlab/jfronny/scripts/SharedProps.kt
index bf31f60..c052689 100644
--- a/convention/src/main/kotlin/io/gitlab/jfronny/scripts/SharedProps.kt
+++ b/convention/src/main/kotlin/io/gitlab/jfronny/scripts/SharedProps.kt
@@ -53,9 +53,9 @@ fun Project.prop(name: String, default: String): String =
     if (hasProperty(name)) prop(name)
     else default
 
-fun Project.prop(name: String, default: String?): String? =
+fun Project.nprop(name: String): String? =
     if (hasProperty(name)) prop(name)
-    else default
+    else null
 
 // Utility to run actions on values
 fun <T> T.runAction(action: Action<T>?): T {
diff --git a/convention/src/main/kotlin/jf.autoversion.gradle.kts b/convention/src/main/kotlin/jf.autoversion.gradle.kts
index 6aa0ac0..bb83ca0 100644
--- a/convention/src/main/kotlin/jf.autoversion.gradle.kts
+++ b/convention/src/main/kotlin/jf.autoversion.gradle.kts
@@ -66,7 +66,7 @@ tasks.register("copyVersionNumber", CopyTextTask::class) {
 tasks.register("bumpVersion", BumpVersionTask::class) {
     gitDir = File(projectDir, ".git")
     isRelease = this@Jf_autoversion_gradle.isRelease
-    nextVersionType = project.provider { prop("nextVersionType", null) }
+    nextVersionType = project.provider { nprop("nextVersionType") }
     nextRelease = project.provider { project.nextRelease }
     lastRelease = project.provider { project.lastRelease }
 }