diff --git a/maloja/__pkginfo__.py b/maloja/__pkginfo__.py
index 299c8fc..2fd02e5 100644
--- a/maloja/__pkginfo__.py
+++ b/maloja/__pkginfo__.py
@@ -5,7 +5,7 @@ author = {
 	"email":"maloja@krateng.dev",
 	"github": "krateng"
 }
-version = 2,4,12
+version = 2,4,13
 versionstr = ".".join(str(n) for n in version)
 links = {
 	"pypi":"malojaserver",
diff --git a/maloja/database.py b/maloja/database.py
index 7fb9aa7..84aada3 100644
--- a/maloja/database.py
+++ b/maloja/database.py
@@ -933,6 +933,7 @@ def build_db():
 	log("Building database...")
 
 	global SCROBBLES, ARTISTS, TRACKS
+	global TRACKS_NORMALIZED_SET, TRACKS_NORMALIZED, ARTISTS_NORMALIZED_SET, ARTISTS_NORMALIZED
 	global SCROBBLESDICT, STAMPS
 
 	SCROBBLES = []
@@ -941,6 +942,11 @@ def build_db():
 	STAMPS = []
 	SCROBBLESDICT = {}
 
+	TRACKS_NORMALIZED = []
+	ARTISTS_NORMALIZED = []
+	ARTISTS_NORMALIZED_SET = set()
+	TRACKS_NORMALIZED_SET = set()
+
 
 	# parse files
 	db = tsv.parse_all(datadir("scrobbles"),"int","string","string",comments=False)