diff --git a/mkbootimg/mkbootimg b/mkbootimg/mkbootimg
index 8c27ff7..1e09f4d 100755
--- a/mkbootimg/mkbootimg
+++ b/mkbootimg/mkbootimg
@@ -93,6 +93,10 @@
     pad_file(f_out, padding)
 
 
+def parse_int(x):
+    return int(x,0)
+
+
 def parse_cmdline():
     parser = ArgumentParser()
     parser.add_argument('--kernel', help='path to the kernel', type=FileType('rb'),
@@ -101,15 +105,15 @@
     parser.add_argument('--second', help='path to the 2nd bootloader', type=FileType('rb'))
     parser.add_argument('--cmdline', help='extra arguments to be passed on the '
                         'kernel command line', default='', action=ValidateStrLenAction, maxlen=1536)
-    parser.add_argument('--base', help='base address', type=int, default=0x10000000)
-    parser.add_argument('----kernel_offset', help='kernel offset', type=int, default=0x00008000)
-    parser.add_argument('--ramdisk_offset', help='ramdisk offset', type=int, default=0x01000000)
-    parser.add_argument('--second_offset', help='2nd bootloader offset', type=int,
+    parser.add_argument('--base', help='base address', type=parse_int, default=0x10000000)
+    parser.add_argument('----kernel_offset', help='kernel offset', type=parse_int, default=0x00008000)
+    parser.add_argument('--ramdisk_offset', help='ramdisk offset', type=parse_int, default=0x01000000)
+    parser.add_argument('--second_offset', help='2nd bootloader offset', type=parse_int,
                         default=0x00f00000)
-    parser.add_argument('--tags_offset', help='tags offset', type=int, default=0x00000100)
+    parser.add_argument('--tags_offset', help='tags offset', type=parse_int, default=0x00000100)
     parser.add_argument('--board', help='board name', default='', action=ValidateStrLenAction,
                         maxlen=16)
-    parser.add_argument('--pagesize', help='page size', type=int,
+    parser.add_argument('--pagesize', help='page size', type=parse_int,
                         choices=[2**i for i in range(11,15)], default=2048)
     parser.add_argument('--id', help='print the image ID on standard output',
                         action='store_true')