diff --git a/t/CMakeLists.txt b/t/CMakeLists.txt
index 7f1b045..f158aca 100644
--- a/t/CMakeLists.txt
+++ b/t/CMakeLists.txt
@@ -5,7 +5,9 @@ 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_test("tests/f2b_logfile_*" "t_logfile")
 add_test("tests/f2b_matches_*" "t_matches")
 add_test("tests/f2b_ipaddr_*"  "t_ipaddr")
+add_test("tests/f2b_regex_*"   "t_rx_posix")
diff --git a/t/t_rx_posix.c b/t/t_rx_posix.c
new file mode 100644
index 0000000..fb7d636
--- /dev/null
+++ b/t/t_rx_posix.c
@@ -0,0 +1,22 @@
+#include "../src/common.h"
+#include "../src/regexps.h"
+
+int main() {
+  f2b_regex_t *list  = NULL;
+  f2b_regex_t *regex = NULL;
+  char matchbuf[32] = "";
+
+  assert((regex = f2b_regex_create("line without HOST", true)) == NULL);
+  assert((regex = f2b_regex_create("line with <HOST>",  true)) != NULL);
+
+  assert(f2b_regexlist_match(list, "line with 192.168.0.1", matchbuf, sizeof(matchbuf)) == false);
+
+  assert((list = f2b_regexlist_append(list, regex)) != NULL);
+
+  assert(f2b_regexlist_match(list, "line with 192.168.0.1", matchbuf, sizeof(matchbuf)) == true);
+  assert(strncmp(matchbuf, "192.168.0.1", sizeof(matchbuf)) == 0);
+
+  assert((list = f2b_regexlist_destroy(list)) == NULL);
+
+  return 0;
+}