diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e83b286..de84cd2 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,6 +1,6 @@
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 
-set(SOURCES "main.c" "logfile.c" "log.c" "matches.c" "ipaddr.c" "filelist.c" "regexps_posix.c" "config.c")
+set(SOURCES "main.c" "logfile.c" "log.c" "matches.c" "ipaddr.c" "filelist.c" "regexps_posix.c" "config.c" "jail.c")
 
 add_executable(f2b ${SOURCES})
 
diff --git a/src/main.c b/src/main.c
index 140cfb2..eaec358 100644
--- a/src/main.c
+++ b/src/main.c
@@ -3,6 +3,7 @@
 #include "ipaddr.h"
 #include "regexps.h"
 #include "config.h"
+#include "jail.h"
 
 int main() {
     printf("Hello world!\n");