diff --git a/jerry-core/debugger/debugger.c b/jerry-core/debugger/debugger.c
index 75b58962d3..02ba152095 100644
--- a/jerry-core/debugger/debugger.c
+++ b/jerry-core/debugger/debugger.c
@@ -271,11 +271,12 @@ jerry_debugger_send_scope_chain (void)
 
 /**
  * Get type of the scope variable property.
+ * @return (jerry_debugger_scope_variable_type_t)
  */
-static jerry_debugger_scope_variable_type_t
+static uint8_t
 jerry_debugger_get_variable_type (ecma_value_t value) /**< input ecma value */
 {
-  jerry_debugger_scope_variable_type_t ret_value = JERRY_DEBUGGER_VALUE_NONE;
+  uint8_t ret_value = JERRY_DEBUGGER_VALUE_NONE;
 
   if (ecma_is_value_undefined (value))
   {
@@ -321,11 +322,12 @@ jerry_debugger_get_variable_type (ecma_value_t value) /**< input ecma value */
  *
  * It will copies the given scope values type, length and value into the outgoing message string.
  *
+ * @param variable_type type (jerry_debugger_scope_variable_type_t)
  * @return true - if the copy was successfully
  *         false - otherwise
  */
 static bool
-jerry_debugger_copy_variables_to_string_message (jerry_debugger_scope_variable_type_t variable_type, /**< type */
+jerry_debugger_copy_variables_to_string_message (uint8_t variable_type, /**< type */
                                                  ecma_string_t *value_str, /**< property name or value string */
                                                  jerry_debugger_send_string_t *message_string_p, /**< msg pointer */
                                                  size_t *buffer_pos) /**< string data position of the message */
@@ -494,7 +496,7 @@ jerry_debugger_send_scope_variables (const uint8_t *recv_buffer_p) /**< pointer
         ecma_property_value_t prop_value_p = prop_pair_p->values[i];
         ecma_value_t property_value;
 
-        jerry_debugger_scope_variable_type_t variable_type = jerry_debugger_get_variable_type (prop_value_p.value);
+        uint8_t variable_type = jerry_debugger_get_variable_type (prop_value_p.value);
 
         property_value = ecma_op_to_string (prop_value_p.value);