diff --git a/pungi/phases/pkgset/sources/source_koji.py b/pungi/phases/pkgset/sources/source_koji.py
index 8a706a61..7d222907 100644
--- a/pungi/phases/pkgset/sources/source_koji.py
+++ b/pungi/phases/pkgset/sources/source_koji.py
@@ -274,7 +274,8 @@ def populate_global_pkgset(compose, koji_wrapper, path_prefix, event_id):
         if not variant_tags[variant]:
             variant_tags[variant].extend(force_list(compose.conf["pkgset_koji_tag"]))
 
-    # Add global tag if supplied.
+    # Add global tag(s) if supplied.
+    global_tags = []
     if 'pkgset_koji_tag' in compose.conf:
         if compose.conf["pkgset_koji_tag"] == "not-used":
             # The magic value is used for modular composes to avoid errors
@@ -283,7 +284,8 @@ def populate_global_pkgset(compose, koji_wrapper, path_prefix, event_id):
                                 'option is no longer required. Remove it from '
                                 'the configuration.')
         else:
-            compose_tags.extend(force_list(compose.conf["pkgset_koji_tag"]))
+            global_tags = force_list(compose.conf["pkgset_koji_tag"])
+    compose_tags.extend(global_tags)
 
     inherit = compose.conf["pkgset_koji_inherit"]
     global_pkgset_path = os.path.join(
@@ -328,7 +330,7 @@ def populate_global_pkgset(compose, koji_wrapper, path_prefix, event_id):
                 global_pkgset = pkgset
             else:
                 global_pkgset.merge(pkgset, None, list(all_arches),
-                                    unique_name=compose_tag in compose.conf['pkgset_koji_tag'])
+                                    unique_name=compose_tag in global_tags)
         with open(global_pkgset_path, 'wb') as f:
             data = pickle.dumps(global_pkgset)
             f.write(data)