diff --git a/src/tests/regression/gh599.at b/src/tests/regression/gh599.at
new file mode 100644
index 0000000..472f228
--- /dev/null
+++ b/src/tests/regression/gh599.at
@@ -0,0 +1,16 @@
+FWD_START_TEST([writing to log after copytruncate])
+AT_KEYWORDS(gh599)
+
+AT_SKIP_IF([! NS_CMD([which truncate >/dev/null 2>&1])])
+AT_SKIP_IF([! NS_CMD([which wc >/dev/null 2>&1])])
+
+dnl Verify we continue to write to the log file after it's truncated. That is,
+dnl simulate logrotate's copytruncate.
+NS_CHECK([truncate -s 0 ./firewalld.log])
+
+dnl generate some logs, anything will do since we have debug enabled.
+FWD_CHECK([--list-all], 0, [ignore], [ignore])
+
+NS_CHECK([sh -c 'let "$(cat ./firewalld.log | wc -c) > 0"'])
+
+FWD_END_TEST
diff --git a/src/tests/regression/regression.at b/src/tests/regression/regression.at
index 8042c3a..2528ddd 100644
--- a/src/tests/regression/regression.at
+++ b/src/tests/regression/regression.at
@@ -27,3 +27,4 @@ m4_include([regression/gh509.at])
 m4_include([regression/gh567.at])
 m4_include([regression/rhbz1779835.at])
 m4_include([regression/gh330.at])
+m4_include([regression/gh599.at])