diff --git a/includes/definitions/pixos.yaml b/includes/definitions/pixos.yaml
index 5609c2becb..8d069463e5 100644
--- a/includes/definitions/pixos.yaml
+++ b/includes/definitions/pixos.yaml
@@ -43,3 +43,4 @@ discovery_modules:
 discovery:
     - sysDescr:
         - Cisco PIX
+        - Cisco Firewall Services Module
diff --git a/tests/snmpsim/pixos_fwsm.snmprec b/tests/snmpsim/pixos_fwsm.snmprec
new file mode 100644
index 0000000000..1741a02ea5
--- /dev/null
+++ b/tests/snmpsim/pixos_fwsm.snmprec
@@ -0,0 +1,2 @@
+1.3.6.1.2.1.1.1.0|4|Cisco Firewall Services Module
+1.3.6.1.2.1.1.2.0|6|1.3.6.1.4.1.9.1.522