diff --git a/core/core.js b/core/core.js
index 5bfcc911..ce83dd8f 100644
--- a/core/core.js
+++ b/core/core.js
@@ -281,7 +281,7 @@ async function getProcessBlob(blobId, key, options) {
 			};
 			process.task.onError = function(error) {
 				try {
-					process.app.send({action: 'error', error: error});
+					process.app.makeFunction(['error'])(error);
 				} catch(e) {
 					print(e);
 				}
diff --git a/src/task.c b/src/task.c
index 653338fd..7752c85a 100644
--- a/src/task.c
+++ b/src/task.c
@@ -461,7 +461,6 @@ JSValue _task_invokeExport_internal(tf_taskstub_t* from, tf_task_t* to, exportid
 
 		result = JS_Call(to->_context, function, this_val, length - 1, argument_array);
 		tf_trace_end(to->_trace);
-		tf_util_report_error(to->_context, result);
 
 		JS_FreeValue(to->_context, this_val);
 		for (int i = 0; i < length - 1; i++)