diff --git a/bsp/stm32f10x/project.uvprojx b/bsp/stm32f10x/project.uvprojx
index 07cb87ae45..6e748db9b5 100644
--- a/bsp/stm32f10x/project.uvprojx
+++ b/bsp/stm32f10x/project.uvprojx
@@ -212,7 +212,7 @@
             <hadIRAM2>0</hadIRAM2>
             <hadIROM2>0</hadIROM2>
             <StupSel>8</StupSel>
-            <useUlib>1</useUlib>
+            <useUlib>0</useUlib>
             <EndSel>0</EndSel>
             <uLtcg>0</uLtcg>
             <RoSelD>3</RoSelD>
diff --git a/bsp/stm32f10x/template.uvprojx b/bsp/stm32f10x/template.uvprojx
index 0d439a6b71..2617710685 100644
--- a/bsp/stm32f10x/template.uvprojx
+++ b/bsp/stm32f10x/template.uvprojx
@@ -215,7 +215,7 @@
             <hadIRAM2>0</hadIRAM2>
             <hadIROM2>0</hadIROM2>
             <StupSel>8</StupSel>
-            <useUlib>1</useUlib>
+            <useUlib>0</useUlib>
             <EndSel>0</EndSel>
             <uLtcg>0</uLtcg>
             <RoSelD>3</RoSelD>