diff --git a/meshtastic/atak.options b/meshtastic/atak.options
index ffce4d9..fbfbc6e 100644
--- a/meshtastic/atak.options
+++ b/meshtastic/atak.options
@@ -1,4 +1,3 @@
-*Contact.callsign_uncompressed max_size:120
-*Contact.callsign_compressed max_size:64
+*Contact.callsign max_size:120
 
 *Status.battery int_size:8
\ No newline at end of file
diff --git a/meshtastic/atak.proto b/meshtastic/atak.proto
index 268ae5c..6d3edca 100644
--- a/meshtastic/atak.proto
+++ b/meshtastic/atak.proto
@@ -176,18 +176,9 @@ message Status {
  */
 message Contact {
   /*
-   * Compressed or uncompressed callsign
+   * Callsign
    */
-  oneof callsign_variant {
-    /*
-     * Uncompressed callsign from ATAK
-     */
-    string callsign_uncompressed = 1;
-    /*
-     * Compressed callsign using unishox2 for the wire
-     */
-    string callsign_compressed = 2;
-  }
+  string callsign = 1;
   /*
    * IP address of endpoint in integer form (0.0.0.0 default)
    */