diff --git a/gaip/fmask_cloud_masking.py b/gaip/fmask_cloud_masking.py
index d0866f0..c196676 100644
--- a/gaip/fmask_cloud_masking.py
+++ b/gaip/fmask_cloud_masking.py
@@ -1191,10 +1191,13 @@ def plcloud(filename, cldprob=22.5, num_Lst=None, images=None, shadow_prob=False
 
     cloud_skew = 0.0  # TODO
 
-    logging.debug("FMASK Final Cloud Layer Percent: %f" %
-                  ((float(Cloud[cloud_mask].sum()) / float(mask.sum())) * 100.0))
-    aux_data['FMASK_cloud_layer_percent'] = (
-        float(Cloud[cloud_mask].sum()) / float(mask.sum())) * 100.0
+    try:
+        cloud_percent = (Cloud[cloud_mask].sum() / float(mask.sum())) * 100
+    except ZeroDivisionError:
+        cloud_percent = 0.0
+
+    logging.debug("FMASK Final Cloud Layer Percent: %f" % cloud_percent)
+    aux_data['FMASK_cloud_layer_percent'] = cloud_percent
     aux_data['FMASK_processing_time'] = processing_time
 
     # We'll modify the return argument for the Python implementation