diff --git a/imap/httpd.c b/imap/httpd.c
index 7fc6179913..27cc02b96d 100644
--- a/imap/httpd.c
+++ b/imap/httpd.c
@@ -419,7 +419,7 @@ int httpd_userisadmin = 0;
 int httpd_userisproxyadmin = 0;
 int httpd_userisanonymous = 1;
 const char *httpd_localip = NULL, *httpd_remoteip = NULL;
-struct protstream *httpd_out = NULL;
+static struct protstream *httpd_out;
 struct protstream *httpd_in = NULL;
 strarray_t *httpd_log_headers = NULL;
 char *httpd_altsvc = NULL;
diff --git a/imap/httpd.h b/imap/httpd.h
index 357383c343..12a8048f4b 100644
--- a/imap/httpd.h
+++ b/imap/httpd.h
@@ -555,7 +555,6 @@ extern struct namespace_t namespace_cgi;
 extern struct buf serverinfo;
 extern ptrarray_t backend_cached;
 extern struct protstream *httpd_in;
-extern struct protstream *httpd_out;
 extern int https;
 extern sasl_conn_t *httpd_saslconn;
 extern int httpd_timeout;