diff --git a/src/httpd.js.c b/src/httpd.js.c
index 2278f0d8..78e22594 100644
--- a/src/httpd.js.c
+++ b/src/httpd.js.c
@@ -1222,6 +1222,7 @@ typedef struct _view_t
 	const char** form_data;
 	void* data;
 	size_t size;
+	char etag[256];
 	bool not_modified;
 } view_t;
 
@@ -1245,7 +1246,7 @@ static void _httpd_endpoint_view_work(tf_ssb_t* ssb, void* user_data)
 {
 	view_t* view = user_data;
 	tf_http_request_t* request = view->request;
-	char blob_id[256] = "";
+	char blob_id[128] = "";
 
 	user_app_t* user_app = _parse_user_app_from_path(request->path, "/view");
 	if (user_app)
@@ -1266,10 +1267,11 @@ static void _httpd_endpoint_view_work(tf_ssb_t* ssb, void* user_data)
 
 	if (*blob_id)
 	{
+		snprintf(view->etag, sizeof(view->etag), "\"%s\"", blob_id);
 		const char* if_none_match = tf_http_request_get_header(request, "if-none-match");
 		char match[258];
 		snprintf(match, sizeof(match), "\"%s\"", blob_id);
-		if (if_none_match && strcmp(if_none_match, match))
+		if (if_none_match && strcmp(if_none_match, match) == 0)
 		{
 			view->not_modified = true;
 		}
@@ -1298,6 +1300,8 @@ static void _httpd_endpoint_view_after_work(tf_ssb_t* ssb, int status, void* use
 		"sandbox allow-downloads allow-top-navigation-by-user-activation",
 		"Content-Type",
 		view->data ? _httpd_mime_type_from_magic_bytes(view->data, view->size) : "text/plain",
+		"etag",
+		view->etag,
 		filename ? "Content-Disposition" : NULL,
 		filename ? content_disposition : NULL,
 	};