diff --git a/PayfritBeacon/Services/APIClient.swift b/PayfritBeacon/Services/APIClient.swift
index 7bea61e..4a74986 100644
--- a/PayfritBeacon/Services/APIClient.swift
+++ b/PayfritBeacon/Services/APIClient.swift
@@ -201,8 +201,8 @@ actor APIClient {
         guard resp.OK else {
             throw APIError.serverError(resp.MESSAGE ?? resp.ERROR ?? "Failed to allocate minor")
         }
-        guard let minor = resp.BeaconMinor, minor > 0 else {
-            throw APIError.serverError("API returned invalid minor value: \(resp.BeaconMinor ?? 0). Service point may not be configured correctly.")
+        guard let minor = resp.BeaconMinor, minor >= 0 else {
+            throw APIError.serverError("API returned invalid minor value: \(resp.BeaconMinor.map(String.init) ?? "nil"). Service point may not be configured correctly.")
         }
         return minor
     }