diff --git a/demos/ARMCM3-STM32L152-DISCOVERY/iar/ch.ewp b/demos/ARMCM3-STM32L152-DISCOVERY/iar/ch.ewp
index 66c028c4e..5f4618dac 100644
--- a/demos/ARMCM3-STM32L152-DISCOVERY/iar/ch.ewp
+++ b/demos/ARMCM3-STM32L152-DISCOVERY/iar/ch.ewp
@@ -1910,6 +1910,9 @@
         <file>
           <name>$PROJ_DIR$\..\..\..\os\hal\include\spi.h</name>
         </file>
+        <file>
+          <name>$PROJ_DIR$\..\..\..\os\hal\include\tm.h</name>
+        </file>
         <file>
           <name>$PROJ_DIR$\..\..\..\os\hal\include\uart.h</name>
         </file>
@@ -1970,6 +1973,9 @@
         <file>
           <name>$PROJ_DIR$\..\..\..\os\hal\src\spi.c</name>
         </file>
+        <file>
+          <name>$PROJ_DIR$\..\..\..\os\hal\src\tm.c</name>
+        </file>
         <file>
           <name>$PROJ_DIR$\..\..\..\os\hal\src\uart.c</name>
         </file>