--- a/tools/naive_variant_caller.py	Wed Feb 26 12:37:00 2014 -0500
+++ b/tools/naive_variant_caller.py	Thu Jan 29 15:02:01 2015 -0500
@@ -18,7 +18,7 @@
     parser.add_option( '-d', '--min_support_depth', dest='min_support_depth', action='store', type="int", default=0, help='Minimum number of reads needed to consider a REF/ALT. Default=0.' )
     parser.add_option( '-q', '--min_base_quality', dest='min_base_quality', action='store', type="int", default=None, help='Minimum base quality.' )
     parser.add_option( '-m', '--min_mapping_quality', dest='min_mapping_quality', action='store', type="int", default=None, help='Minimum mapping.' )
-    parser.add_option( '-t', '--coverage_dtype', dest='coverage_dtype', action='store', type="string", default='uint64', help='dtype to use for coverage array' )
+    parser.add_option( '-t', '--coverage_dtype', dest='coverage_dtype', action='store', type="string", default=None, help='dtype to use for coverage array' )
     parser.add_option( '--allow_out_of_bounds_positions', dest='allow_out_of_bounds_positions', action='store_true', default = False, help='Allows out of bounds positions to not throw fatal errors' )
     parser.add_option( '--safe', dest='safe', action='store_true', default = False, help='Perform checks to prevent certain errors. Is slower.' )
     parser.add_option( '--region', dest='region', action='append', type="string", default=[], help='region' )