diff --git a/src/os/inc/osapi-task.h b/src/os/inc/osapi-task.h
index 0ad2c44fb..716f0ba17 100644
--- a/src/os/inc/osapi-task.h
+++ b/src/os/inc/osapi-task.h
@@ -103,7 +103,7 @@ typedef osal_task((*osal_task_entry)(void)); /**< @brief For task entry point */
  * @retval #OS_INVALID_POINTER if any of the necessary pointers are NULL
  * @retval #OS_ERR_INVALID_SIZE if the stack_size argument is zero
  * @retval #OS_ERR_NAME_TOO_LONG name length including null terminator greater than #OS_MAX_API_NAME
- * @retval #OS_ERR_INVALID_PRIORITY if the priority is bad @covtest
+ * @retval #OS_ERR_INVALID_PRIORITY if the initial priority is invalid @covtest
  * @retval #OS_ERR_NO_FREE_IDS if there can be no more tasks created
  * @retval #OS_ERR_NAME_TAKEN if the name specified is already used by a task
  * @retval #OS_ERROR if an unspecified/other error occurs @covtest
@@ -176,7 +176,7 @@ int32 OS_TaskDelay(uint32 millisecond);
  * @return Execution status, see @ref OSReturnCodes
  * @retval #OS_SUCCESS @copybrief OS_SUCCESS
  * @retval #OS_ERR_INVALID_ID if the ID passed to it is invalid
- * @retval #OS_ERR_INVALID_PRIORITY if the priority is greater than the max allowed @covtest
+ * @retval #OS_ERR_INVALID_PRIORITY if the new priority is invalid @covtest
  * @retval #OS_ERROR if an unspecified/other error occurs @covtest
  */
 int32 OS_TaskSetPriority(osal_id_t task_id, osal_priority_t new_priority);
diff --git a/src/os/rtems/src/os-impl-tasks.c b/src/os/rtems/src/os-impl-tasks.c
index 64c9e8b7a..bf3f79198 100644
--- a/src/os/rtems/src/os-impl-tasks.c
+++ b/src/os/rtems/src/os-impl-tasks.c
@@ -119,7 +119,11 @@ int32 OS_TaskCreate_Impl(const OS_object_token_t *token, uint32 flags)
     status = rtems_task_create(r_name, task->priority, task->stack_size, r_mode, r_attributes, &impl->id);
 
     /* check if task_create failed */
-    if (status != RTEMS_SUCCESSFUL)
+    if (status == RTEMS_INVALID_PRIORITY)
+    {
+        return OS_ERR_INVALID_PRIORITY;
+    }
+    else if (status != RTEMS_SUCCESSFUL)
     {
         /* Provide some feedback as to why this failed */
         OS_printf("rtems_task_create failed: %s\n", rtems_status_text(status));
@@ -230,18 +234,23 @@ int32 OS_TaskSetPriority_Impl(const OS_object_token_t *token, osal_priority_t ne
     rtems_task_priority             old_pri;
     rtems_status_code               status;
     OS_impl_task_internal_record_t *impl;
+    int32                           return_code = OS_SUCCESS;
 
     impl = OS_OBJECT_TABLE_GET(OS_impl_task_table, *token);
 
     /* Set RTEMS Task Priority */
     status = rtems_task_set_priority(impl->id, new_priority, &old_pri);
-    if (status != RTEMS_SUCCESSFUL)
+    if (status == RTEMS_INVALID_PRIORITY)
+    {
+        return_code = OS_ERR_INVALID_PRIORITY;
+    }
+    else if (status != RTEMS_SUCCESSFUL)
     {
         OS_DEBUG("Unhandled task_set_priority error: %s\n", rtems_status_text(status));
-        return OS_ERROR;
+        return_code = OS_ERROR;
     }
 
-    return OS_SUCCESS;
+    return return_code;
 }
 
 /*----------------------------------------------------------------