diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index da732ac..37c2b2c 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -524,7 +524,7 @@ if(OPTIONAL_TEST)
     ${CUSTOM_SRC_DIR}/pfilter.c
     ${CUSTOM_SRC_DIR}/telemetry.c
     ${CUSTOM_SRC_DIR}/decode_aprs.c
-    ${CUSTOM_SRC_DIR}/deviceid.c.c
+    ${CUSTOM_SRC_DIR}/deviceid.c
     ${CUSTOM_SRC_DIR}/dwgpsnmea.c
     ${CUSTOM_SRC_DIR}/dwgps.c
     ${CUSTOM_SRC_DIR}/dwgpsd.c