diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 858018a52..5ea24cc0d 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -61,6 +61,8 @@ SET(FOO_src
             ${SRC}/symba/symba_setup.f90
             ${SRC}/symba/symba_step.f90
             ${SRC}/symba/symba_util.f90
+            ${SRC}/tides/tides_getacch_pl.f90
+            ${SRC}/tides/tides_spin_step.f90
             ${SRC}/user/user_getacch.f90
             ${SRC}/util/util_append.f90
             ${SRC}/util/util_coord.f90
@@ -126,4 +128,4 @@ IF(WIN32)
 ELSE()
     SET(CMAKE_INSTALL_PREFIX /usr/local)
 ENDIF(WIN32)
-INSTALL(TARGETS ${FOOEXE} RUNTIME DESTINATION bin)
+INSTALL(TARGETS ${FOOEXE} RUNTIME DESTINATION bin)
\ No newline at end of file