diff --git a/dynamixel_manager/include/modules/motion_pages.h b/dynamixel_manager/include/modules/motion_pages.h
index a0dd2151b09d5a8cc44255152613555900050bf6..e871850961238d47b2f0557a836b129e1a2bb767 100755
--- a/dynamixel_manager/include/modules/motion_pages.h
+++ b/dynamixel_manager/include/modules/motion_pages.h
@@ -49,7 +49,7 @@ void pages_get_page(unsigned char page_id,TPage *page);
 unsigned char pages_check_checksum(TPage *page);
 void pages_clear_page(TPage *page);
 void pages_copy_page(TPage *src,TPage *dst);
-inline unsigned char pages_get_slope(TPage *page,unsigned char servo_id);
+unsigned char pages_get_slope(TPage *page,unsigned char servo_id);
 
 #ifdef __cplusplus
 }