diff --git a/unix/uxproxy.c b/unix/uxproxy.c
index ddc55800..792bbdc2 100644
--- a/unix/uxproxy.c
+++ b/unix/uxproxy.c
@@ -286,6 +286,8 @@ Socket platform_new_connection(SockAddr addr, char *hostname,
 	_exit(255);
     }
 
+    sfree(cmd);
+
     close(to_cmd_pipe[0]);
     close(from_cmd_pipe[1]);
 
diff --git a/windows/winproxy.c b/windows/winproxy.c
index bec00840..877dc5e1 100644
--- a/windows/winproxy.c
+++ b/windows/winproxy.c
@@ -199,6 +199,8 @@ Socket platform_new_connection(SockAddr addr, char *hostname,
 		  CREATE_NO_WINDOW | NORMAL_PRIORITY_CLASS,
 		  NULL, NULL, &si, &pi);
 
+    sfree(cmd);
+
     CloseHandle(cmd_from_us);
     CloseHandle(cmd_to_us);