Index: rocdigs/impl/p50x.c
--- rocdigs/impl/p50x.c.orig
+++ rocdigs/impl/p50x.c
@@ -602,7 +602,7 @@ static Boolean __getversion( iOP50x inst ) {
     else
       state = P50_SNDERR;
 
-    if( state = P50_OK ) {
+    if( state == P50_OK ) {
     int bAvail = 0;
     ThreadOp.sleep( 500 );
     bAvail = SerialOp.available(data->serial);