diff --git a/Sources/BuildTool/BuildTool.swift b/Sources/BuildTool/BuildTool.swift
index 931a3a4..c526748 100644
--- a/Sources/BuildTool/BuildTool.swift
+++ b/Sources/BuildTool/BuildTool.swift
@@ -55,7 +55,8 @@ struct SimctlOutput: Codable {
 
     struct Device: Codable {
         var udid: String
-        var deviceTypeIdentifier: String
+        // Key seems to be absent in the case where you have something like "availabilityError": "device type profile not found"
+        var deviceTypeIdentifier: String?
     }
 }