diff --git a/CMakeLists.txt b/CMakeLists.txt
index ef9e4dec7..74289b285 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -603,6 +603,7 @@ set (wsjt_FSRCS
   lib/fst280/encode280_74.f90
   lib/fst280/fst280d.f90
   lib/fst280/fst280sim.f90
+  lib/fst280/get_crc24.f90
   lib/fst280/gen_fst280wave.f90
   lib/fst280/genfst280.f90
   lib/fst280/get_fst280_bitmetrics.f90