diff --git a/app/src/processing/app/linux/UDevAdmParser.java b/app/src/processing/app/linux/UDevAdmParser.java
index 147c13bff..53793f83a 100644
--- a/app/src/processing/app/linux/UDevAdmParser.java
+++ b/app/src/processing/app/linux/UDevAdmParser.java
@@ -10,7 +10,11 @@ public class UDevAdmParser {
     Properties properties = new Properties();
     properties.load(new StringReader(output));
 
-    return ("0x" + properties.get("ID_VENDOR_ID").toString() + "_0x" + properties.get("ID_MODEL_ID").toString()).toUpperCase();
+    Object vid = properties.get("ID_VENDOR_ID");
+    Object pid = properties.get("ID_MODEL_ID");
+    if (vid == null || pid == null)
+      return null;
+    return ("0x" + vid + "_0x" + pid).toUpperCase();
   }
 
 }