diff --git a/src/node/hooks/express/openapi.js b/src/node/hooks/express/openapi.js
index c687b538b..0531854aa 100644
--- a/src/node/hooks/express/openapi.js
+++ b/src/node/hooks/express/openapi.js
@@ -608,7 +608,10 @@ exports.expressPreSession = async (hookName, {app}) => {
           }
 
           // pass to api handler
-          const data = await apiHandler.handle(version, funcName, fields, req, res).catch((err) => {
+          let data;
+          try {
+            data = await apiHandler.handle(version, funcName, fields, req, res);
+          } catch (err) {
             // convert all errors to http errors
             if (createHTTPError.isHttpError(err)) {
               // pass http errors thrown by handler forward
@@ -623,7 +626,7 @@ exports.expressPreSession = async (hookName, {app}) => {
               logger.error(err.stack || err.toString());
               throw new createHTTPError.InternalError('internal error');
             }
-          });
+          }
 
           // return in common format
           const response = {code: 0, message: 'ok', data: data || null};