diff --git a/bsp/stm32f10x/project.ewp b/bsp/stm32f10x/project.ewp
index 7586b0ef49b29b3610f204010d9e3cbc0d2dc846..809023b16e7c0af3440003391b96037d975b0f85 100644
--- a/bsp/stm32f10x/project.ewp
+++ b/bsp/stm32f10x/project.ewp
@@ -165,6 +165,8 @@
USE_STDPERIPH_DRIVER
STM32F10X_HD
+ RT_USING_DLIBC
+ _DLIB_FILE_DESCRIPTOR