diff --git a/stm32h7/networking/CMakeLists.txt b/stm32h7/networking/CMakeLists.txt
index 9e7138a..a14665b 100644
--- a/stm32h7/networking/CMakeLists.txt
+++ b/stm32h7/networking/CMakeLists.txt
@@ -1,7 +1,11 @@
+# These are part of the RTEMS BSP for RTEMS
+if(FSFW_OSAL MATCHES freertos)
+    app_dhcp.c
+    app_ethernet.c
+    ethernetif.c
+endif()
+
 target_sources(${TARGET_NAME} PRIVATE
-	app_dhcp.c
-	app_ethernet.c
-	ethernetif.c
 	UdpTcLwIpPollingTask.cpp
 	TmTcLwIpUdpBridge.cpp
 )