diff --git a/generate.py b/generate.py
index 20eac54..653403b 100755
--- a/generate.py
+++ b/generate.py
@@ -113,12 +113,13 @@ def create_roa_entries(route_objects, filter_rules, mode, f):
         # Now check if it permits or denies
         if matching_filter_rule['route_allowed'] == False:
             # Skip non-permitted routes
-            f.write('# route object not permitted: ' + str(route_network) + "\n")
-            f.write('# route object was denied by filter rule: ' + str(matching_filter_rule) + "\n")
+            f.write('# DENIED' + str(route_object) + ' by filter rule: ' + str(matching_filter_rule) + '\n')
             continue
         # Check if min-length fits filter requirements
-        
-
+        if matching_filter_rule['min_length'] > route_network.prefixlen:
+            # Drop route objects which do not satisfy min_length requirement of matching filter rule
+            f.write('# FAILED minimum prefix length requirement exceeded: ' + str(route_object) + ' against filter rule: ' + str(matching_filter_rule) + '\n')
+            continue
         # Figure out max-length (filter rule wins over route object)
         if 'max-length' in route_object.keys():
             allowed_max_len = min(int(matching_filter_rule['max_length']), int(route_object['max-length']))