diff --git a/t/CMakeLists.txt b/t/CMakeLists.txt
index 788ef7a..e84f306 100644
--- a/t/CMakeLists.txt
+++ b/t/CMakeLists.txt
@@ -5,7 +5,7 @@ set(SRC_DIR "../src")
 add_executable("t_logfile" "t_logfile.c" "${SRC_DIR}/logfile.c")
 add_executable("t_matches" "t_matches.c" "${SRC_DIR}/matches.c")
 add_executable("t_ipaddr"  "t_ipaddr.c"  "${SRC_DIR}/ipaddr.c" "${SRC_DIR}/matches.c")
-add_executable("t_rx_posix" "t_rx_posix.c" "${SRC_DIR}/regexps_posix.c")
+add_executable("t_rx_posix" "t_rx_posix.c" "${SRC_DIR}/regexps_posix.c"  "${SRC_DIR}/log.c")
 add_executable("t_config_param" "t_config_param.c" "${SRC_DIR}/config.c" "${SRC_DIR}/log.c")
 
 add_test("tests/f2b_logfile_*" "t_logfile")