diff --git a/docs/ENVIRONMENT.md b/docs/ENVIRONMENT.md
index 30c987f8341..b6e59144fbd 100644
--- a/docs/ENVIRONMENT.md
+++ b/docs/ENVIRONMENT.md
@@ -596,6 +596,13 @@ SYSTEMD_HOME_DEBUG_SUFFIX=foo \
   parts of the session continue running. Thus, we highly recommend that this variable
   isn't used unless necessary. Defaults to true.
 
+`homectl`:
+
+* `$SYSTEMD_HOME_FIRSTBOOT_OVERRIDE` – if set to "1" will make `homectl
+  firstboot --prompt-new-user` interactively ask for user creation, even if
+  there already exists at least one regular user on the system. If set to "0"
+  will make the tool skip any such query.
+
 `kernel-install`:
 
 * `$KERNEL_INSTALL_BYPASS` – If set to "1", execution of kernel-install is skipped
diff --git a/src/home/homectl.c b/src/home/homectl.c
index ad372c84202..cc2f0735827 100644
--- a/src/home/homectl.c
+++ b/src/home/homectl.c
@@ -2697,12 +2697,20 @@ static int verb_firstboot(int argc, char *argv[], void *userdata) {
         if (r > 0) /* Already created users from credentials */
                 return 0;
 
-        r = has_regular_user();
-        if (r < 0)
-                return r;
-        if (r > 0) {
-                log_info("Regular user already present in user database, skipping user creation.");
+        r = getenv_bool("SYSTEMD_HOME_FIRSTBOOT_OVERRIDE");
+        if (r == 0)
                 return 0;
+        if (r < 0) {
+                if (r != -ENXIO)
+                        log_warning_errno(r, "Failed to parse $SYSTEMD_HOME_FIRSTBOOT_OVERRIDE, ignoring: %m");
+
+                r = has_regular_user();
+                if (r < 0)
+                        return r;
+                if (r > 0) {
+                        log_info("Regular user already present in user database, skipping user creation.");
+                        return 0;
+                }
         }
 
         return create_interactively();