diff --git a/prometheuspvesd/discovery.py b/prometheuspvesd/discovery.py
index 4f71ac7..ee961c6 100644
--- a/prometheuspvesd/discovery.py
+++ b/prometheuspvesd/discovery.py
@@ -132,7 +132,7 @@ class Discovery:
             if str(obj["vmid"]) in self.config.config["exclude_vmid"]:
                 continue
 
-            if isinstance(obj["tags"], str) and not set(obj["tags"].split(",")).isdisjoint(
+            if isinstance(obj["tags"], str) and not set(obj["tags"].split(";")).isdisjoint(
                 self.config.config["exclude_tags"]
             ):
                 continue
diff --git a/prometheuspvesd/test/fixtures/fixtures.py b/prometheuspvesd/test/fixtures/fixtures.py
index bed5716..f03bf3a 100644
--- a/prometheuspvesd/test/fixtures/fixtures.py
+++ b/prometheuspvesd/test/fixtures/fixtures.py
@@ -212,7 +212,7 @@ def qemus():
             "status": "running",
             "netout": 12159205236,
             "mem": 496179157,
-            "tags": "unmonitored,excluded,postgres"
+            "tags": "unmonitored;excluded;postgres"
         },
         {
             "diskwrite": 0,