diff --git a/src/test/test-execute.c b/src/test/test-execute.c
index c0e046b5e2..239fcea5e3 100644
--- a/src/test/test-execute.c
+++ b/src/test/test-execute.c
@@ -444,6 +444,7 @@ static void test_exec_systemcallfilter(Manager *m) {
         test(m, "exec-systemcallfilter-with-errno-name.service", errno_from_name("EILSEQ"), CLD_EXITED);
         test(m, "exec-systemcallfilter-with-errno-number.service", 255, CLD_EXITED);
         test(m, "exec-systemcallfilter-with-errno-multi.service", errno_from_name("EILSEQ"), CLD_EXITED);
+        test(m, "exec-systemcallfilter-with-errno-in-allow-list.service", errno_from_name("EILSEQ"), CLD_EXITED);
         test(m, "exec-systemcallfilter-override-error-action.service", SIGSYS, CLD_KILLED);
         test(m, "exec-systemcallfilter-override-error-action2.service", errno_from_name("EILSEQ"), CLD_EXITED);
 #endif
diff --git a/test/test-execute/exec-systemcallfilter-with-errno-in-allow-list.service b/test/test-execute/exec-systemcallfilter-with-errno-in-allow-list.service
new file mode 100644
index 0000000000..4b2636eb44
--- /dev/null
+++ b/test/test-execute/exec-systemcallfilter-with-errno-in-allow-list.service
@@ -0,0 +1,9 @@
+[Unit]
+Description=Test for SystemCallFilter with errno name (for issue #18916)
+
+[Service]
+ExecStart=/usr/bin/python3 -c 'import os\ntry: os.uname()\nexcept Exception as e: exit(e.errno)'
+Type=oneshot
+SystemCallFilter=@system-service
+SystemCallFilter=~uname:EILSEQ
+SystemCallErrorNumber=EACCES