diff --git a/radio/rfsimulator/simulator.c b/radio/rfsimulator/simulator.c
index 1a5c94f698..13a414fed6 100644
--- a/radio/rfsimulator/simulator.c
+++ b/radio/rfsimulator/simulator.c
@@ -358,14 +358,6 @@ static void rfsimulator_readconfig(rfsimulator_state_t *rfsimulator) {
     }
   }
 
-  /* for compatibility keep environment variable usage */
-  if (getenv("RFSIMULATOR") != NULL) {
-    rfsimulator->ip = getenv("RFSIMULATOR");
-    LOG_W(HW, "The RFSIMULATOR environment variable is deprecated and support will be removed in the future. Instead, add parameter --rfsimulator.serveraddr %s to set the server address. Note: the default is \"server\"; for the gNB/eNB, you don't have to set any configuration.\n", rfsimulator->ip);
-    LOG_I(HW, "Remove RFSIMULATOR environment variable to get rid of this message and the sleep.\n");
-    sleep(10);
-  }
-
   if ( strncasecmp(rfsimulator->ip,"enb",3) == 0 ||
        strncasecmp(rfsimulator->ip,"server",3) == 0 )
     rfsimulator->role = SIMU_ROLE_SERVER;