diff --git a/bus_analyzer/bus_analyzer/extract.py b/bus_analyzer/bus_analyzer/extract.py
index cb5a20f..7512a86 100644
--- a/bus_analyzer/bus_analyzer/extract.py
+++ b/bus_analyzer/bus_analyzer/extract.py
@@ -201,7 +201,8 @@ def recognize_odometer(prototypes, frame):
 	"""
 	odo = frame.crop(AREA_COORDS["odo"])
 	digits = extract_digits(odo, "odo")
-	mask = Image.open(prototypes['mask'][0])
+	mask = prototypes['mask']['mask']
+	mask = mask.convert(mode='L')
 	digits = [
 		recognize_digit(prototypes["odo-digits"], digit, mask=mask) for digit in digits[:-1]
 	] + [
@@ -220,7 +221,8 @@ def recognize_odometer(prototypes, frame):
 def recognize_clock(prototypes, frame):
 	clock = frame.crop(AREA_COORDS["clock"])
 	digits = extract_digits(clock, "clock")
-	mask = Image.open(prototypes['mask'][0])
+	mask = prototypes['mask']['mask']
+	mask = mask.convert(mode='L')
 	digits = [
 		recognize_digit(prototypes["odo-digits"], digit, i == 0, mask=mask) for i, digit in enumerate(digits)
 	]
diff --git a/bus_analyzer/bus_analyzer/main.py b/bus_analyzer/bus_analyzer/main.py
index 0fd1c86..a53ef86 100644
--- a/bus_analyzer/bus_analyzer/main.py
+++ b/bus_analyzer/bus_analyzer/main.py
@@ -105,7 +105,7 @@ def do_analyze_segment(dbconnect, *segment_paths, base_dir='.', prototypes_path=
 	dbmanager = database.DBManager(dsn=dbconnect)
 
 	for segment_path in segment_paths:
-		analyze_segment(db_manager, prototypes, segment_path)
+		analyze_segment(dbmanager, prototypes, segment_path)
 
 
 def analyze_segment(db_manager, prototypes, segment_path, check_segment_name=None):