diff --git a/mkbootimg/mkbootimg b/mkbootimg/mkbootimg
index 7b04bcc..5a13da2 100755
--- a/mkbootimg/mkbootimg
+++ b/mkbootimg/mkbootimg
@@ -102,12 +102,12 @@
 def parse_os_version(x):
     match = re.search(r'^(\d{1,3})(?:\.(\d{1,3})(?:\.(\d{1,3}))?)?', x)
     if match:
-        a = parse_int(match.group(1))
+        a = int(match.group(1))
         b = c = 0
         if match.lastindex >= 2:
-            b = parse_int(match.group(2))
+            b = int(match.group(2))
         if match.lastindex == 3:
-            c = parse_int(match.group(3))
+            c = int(match.group(3))
         # 7 bits allocated for each field
         assert a < 128
         assert b < 128
@@ -118,8 +118,8 @@
 def parse_os_patch_level(x):
     match = re.search(r'^(\d{4})-(\d{2})-(\d{2})', x)
     if match:
-        y = parse_int(match.group(1)) - 2000
-        m = parse_int(match.group(2))
+        y = int(match.group(1)) - 2000
+        m = int(match.group(2))
         # 7 bits allocated for the year, 4 bits for the month
         assert y >= 0 and y < 128
         assert m > 0 and m <= 12