1 files changed, 2 insertions, 5 deletions

diff --git a/src/callproc.c b/src/callproc.c
index a677334b3b7..f40ed3244a5 100644
--- a/src/callproc.c
+++ b/src/callproc.c
@@ -1315,13 +1315,10 @@ child_setup (int in, int out, int err, char **new_argv, bool set_pgrp,
 
     if (STRINGP (display))
       {
-        char *vdata;
-
         if (MAX_ALLOCA - sizeof "DISPLAY=" < SBYTES (display))
           exec_failed (new_argv[0], ENOMEM);
-        vdata = alloca (sizeof "DISPLAY=" + SBYTES (display));
-        strcpy (vdata, "DISPLAY=");
-        strcat (vdata, SSDATA (display));
+        char *vdata = alloca (sizeof "DISPLAY=" + SBYTES (display));
+        lispstpcpy (stpcpy (vdata, "DISPLAY="), display);
         new_env = add_env (env, new_env, vdata);
       }