diff --git a/litex/tools/litex_sim.py b/litex/tools/litex_sim.py
index 6d50e7814..5e21a1959 100755
--- a/litex/tools/litex_sim.py
+++ b/litex/tools/litex_sim.py
@@ -266,8 +266,8 @@ def main():
     parser.add_argument("--sdram-verbose-timing", action="store_true",     help="Enable SDRAM verbose timing logging")
     parser.add_argument("--with-ethernet",        action="store_true",     help="Enable Ethernet support")
     parser.add_argument("--with-etherbone",       action="store_true",     help="Enable Etherbone support")
-    parser.add_argument("--local-ip",             default="192.168.1.50",  help="Local IP address of SoC")
-    parser.add_argument("--remote-ip",            default="192.168.1.100", help="Remote IP address of TFTP server")
+    parser.add_argument("--local-ip",             default="192.168.1.50",  help="Local IP address of SoC (default=192.168.1.50)")
+    parser.add_argument("--remote-ip",            default="192.168.1.100", help="Remote IP address of TFTP server (default=192.168.1.100)")
     parser.add_argument("--with-analyzer",        action="store_true",     help="Enable Analyzer support")
     parser.add_argument("--trace",                action="store_true",     help="Enable VCD tracing")
     parser.add_argument("--trace-start",          default=0,               help="Cycle to start VCD tracing")