diff --git a/jerry-core/ecma/operations/ecma-promise-object.c b/jerry-core/ecma/operations/ecma-promise-object.c
index 35bbc7c72..990488596 100644
--- a/jerry-core/ecma/operations/ecma-promise-object.c
+++ b/jerry-core/ecma/operations/ecma-promise-object.c
@@ -218,7 +218,6 @@ ecma_promise_reject_handler (const ecma_value_t function, /**< the function itse
                              const ecma_length_t argc) /**< argument number */
 {
   JERRY_UNUSED (this);
-  JERRY_UNUSED (argc);
 
   ecma_string_t str_promise;
   ecma_string_t str_already_resolved;
@@ -242,8 +241,10 @@ ecma_promise_reject_handler (const ecma_value_t function, /**< the function itse
 
   /* 5. */
   ecma_set_already_resolved_value (already_resolved, true);
+
   /* 6. */
-  ecma_reject_promise (promise, argv[0]);
+  ecma_value_t reject_value = (argc == 0) ? ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED) : argv[0];
+  ecma_reject_promise (promise, reject_value);
   ecma_free_value (promise);
   ecma_free_value (already_resolved);
   return ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED);
@@ -263,7 +264,6 @@ ecma_promise_resolve_handler (const ecma_value_t function, /**< the function its
                               const ecma_length_t argc) /**< argument number */
 {
   JERRY_UNUSED (this);
-  JERRY_UNUSED (argc);
 
   ecma_string_t str_promise;
   ecma_string_t str_already_resolved;
@@ -286,6 +286,13 @@ ecma_promise_resolve_handler (const ecma_value_t function, /**< the function its
   /* 5. */
   ecma_set_already_resolved_value (already_resolved, true);
 
+  /* If the argc is 0, then fulfill the `undefined`. */
+  if (argc == 0)
+  {
+    ecma_fulfill_promise (promise, ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED));
+    goto end_of_resolve_function;
+  }
+
   /* 6. */
   if (argv[0] == promise)
   {
diff --git a/tests/jerry/es2015/regression-test-issue-1996.js b/tests/jerry/es2015/regression-test-issue-1996.js
new file mode 100644
index 000000000..4cd2b2f68
--- /dev/null
+++ b/tests/jerry/es2015/regression-test-issue-1996.js
@@ -0,0 +1,21 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+new Promise(function(f) {
+    f.apply()
+});
+
+new Promise(function(f, r) {
+    r.apply()
+});