diff --git a/convention/src/main/kotlin/jf.autoversion.gradle.kts b/convention/src/main/kotlin/jf.autoversion.gradle.kts
index 31e34f2..3037377 100644
--- a/convention/src/main/kotlin/jf.autoversion.gradle.kts
+++ b/convention/src/main/kotlin/jf.autoversion.gradle.kts
@@ -65,7 +65,7 @@ tasks.register("bumpVersion") {
         if (!File(projectDir, ".git").exists()) throw IllegalStateException("Cannot bump without repository")
         if (isRelease) throw IllegalStateException("Cannot bump while 'release' is set")
         if (!project.hasProperty("versionType")) throw IllegalStateException("bumpVersion requires you to set -PversionType=release|beta|alpha")
-        val vt = VersionType.byName(prop("versionType")) ?: throw IllegalStateException("Unrecognized version type")
+        val vt = prop("nextVersionType").run { VersionType.byName(this) ?: throw IllegalStateException("Unrecognized version type: $this") }
         val name = nextRelease!!.withType(vt).toString()
         Git.open(projectDir).use { git ->
             git.tag().setName(name).call()