diff --git a/main/manager.c b/main/manager.c
index 1b0ce8897f..f69f3fad8d 100644
--- a/main/manager.c
+++ b/main/manager.c
@@ -5852,7 +5852,7 @@ static int auth_http_callback(struct ast_tcptls_session_instance *ser,
 		goto auth_callback_out;
 	}
 
-	ast_str_append(&http_header, 0, "Content-type: text/%s", contenttype[format]);
+	ast_str_append(&http_header, 0, "Content-type: text/%s\r\n", contenttype[format]);
 
 	if (format == FORMAT_XML) {
 		ast_str_append(&out, 0, "<ajax-response>\n");
diff --git a/res/res_phoneprov.c b/res/res_phoneprov.c
index e969bc402b..24d7b65051 100644
--- a/res/res_phoneprov.c
+++ b/res/res_phoneprov.c
@@ -440,7 +440,7 @@ static int phoneprov_callback(struct ast_tcptls_session_instance *ser, const str
 		}
 
 		http_header = ast_str_create(80);
-		ast_str_set(&http_header, 0, "Content-type: %s",
+		ast_str_set(&http_header, 0, "Content-type: %s\r\n",
 			route->file->mime_type);
 
 		ast_http_send(ser, method, 200, NULL, http_header, NULL, fd, 0);
@@ -504,7 +504,7 @@ static int phoneprov_callback(struct ast_tcptls_session_instance *ser, const str
 		}
 
 		http_header = ast_str_create(80);
-		ast_str_set(&http_header, 0, "Content-type: %s",
+		ast_str_set(&http_header, 0, "Content-type: %s\r\n",
 			route->file->mime_type);
 
 		if (!(result = ast_str_create(512))) {