diff --git a/demos/ARMCM4-STM32F407-LWIP-FATFS-USB/.project b/demos/ARMCM4-STM32F407-LWIP-FATFS-USB/.project
index 369ab25d5..325a90d37 100644
--- a/demos/ARMCM4-STM32F407-LWIP-FATFS-USB/.project
+++ b/demos/ARMCM4-STM32F407-LWIP-FATFS-USB/.project
@@ -29,6 +29,11 @@
 			<type>2</type>
 			<locationURI>CHIBIOS/boards/OLIMEX_STM32_E407</locationURI>
 		</link>
+		<link>
+			<name>fatfs</name>
+			<type>2</type>
+			<locationURI>CHIBIOS/ext/fatfs</locationURI>
+		</link>
 		<link>
 			<name>lwip</name>
 			<type>2</type>