diff --git a/jerry-core/vm/opcodes-ecma-arithmetics.c b/jerry-core/vm/opcodes-ecma-arithmetics.c
index 96412bd0a..68892768d 100644
--- a/jerry-core/vm/opcodes-ecma-arithmetics.c
+++ b/jerry-core/vm/opcodes-ecma-arithmetics.c
@@ -136,6 +136,14 @@ opfunc_addition (ecma_value_t left_value, /**< left value */
 
     if (ECMA_IS_VALUE_ERROR (str_left_value))
     {
+      if (free_left_value)
+      {
+        ecma_free_value (left_value);
+      }
+      if (free_right_value)
+      {
+        ecma_free_value (right_value);
+      }
       return str_left_value;
     }
 
@@ -145,7 +153,14 @@ opfunc_addition (ecma_value_t left_value, /**< left value */
 
     if (ECMA_IS_VALUE_ERROR (str_right_value))
     {
-      ecma_free_value (right_value);
+      if (free_right_value)
+      {
+        ecma_free_value (right_value);
+      }
+      if (free_left_value)
+      {
+        ecma_free_value (left_value);
+      }
       ecma_deref_ecma_string (string1_p);
       return str_right_value;
     }
diff --git a/tests/jerry/fail/regression-test-issue-2901.js b/tests/jerry/fail/regression-test-issue-2901.js
new file mode 100644
index 000000000..45c2a01a8
--- /dev/null
+++ b/tests/jerry/fail/regression-test-issue-2901.js
@@ -0,0 +1,17 @@
+// 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.
+
+object = new Object ( )
+var str = Symbol ( 'foo' )
+assert ( object + str === "[object Object]" )
diff --git a/tests/jerry/fail/regression-test-issue-2902.js b/tests/jerry/fail/regression-test-issue-2902.js
new file mode 100644
index 000000000..0d9c69bed
--- /dev/null
+++ b/tests/jerry/fail/regression-test-issue-2902.js
@@ -0,0 +1,16 @@
+// 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.
+
+var b = Symbol.for();
+for (var $;;) {$ = $("" + b)};