diff --git a/maxatac/analyses/normalize.py b/maxatac/analyses/normalize.py
index 1aa0809..76b3353 100644
--- a/maxatac/analyses/normalize.py
+++ b/maxatac/analyses/normalize.py
@@ -30,7 +30,7 @@ def run_normalization(args):
     3) Find the genomic min and max values by looping through each chromosome
     5) Loop through each chromosome and minmax normalize the values based on the genomic values.
 
-    :param args: signal, output_dir, chromosome_sizes, chromosomes, max_percentile, method, blacklist
+    :param args: signal, output_dir, chromosome_sizes, chromosomes, max_percentile, method, blacklist, max_zooms
 
     :return: A minmax normalized bigwig file
     """
@@ -83,7 +83,7 @@ def run_normalization(args):
     with pyBigWig.open(args.signal) as input_bw, pyBigWig.open(output_filename, "w") as output_bw:
         header = [(x, chromosome_length_dictionary[x]) for x in sorted(args.chromosomes)]
 
-        output_bw.addHeader(header)
+        output_bw.addHeader(header, maxZooms = args.max_zooms)
 
         # For every chromosome in header, perform normalization
         for chrom_name, chrom_length in header:
@@ -115,7 +115,7 @@ def run_normalization(args):
                                  ends=chrom_length,
                                  span=1,
                                  step=1,
-                                 values=normalized_signal.tolist()
+                                 values=normalized_signal.astype(np.float16).tolist()
                                  )
 
     # Measure time of averaging