diff --git a/bbot/core/helpers/misc.py b/bbot/core/helpers/misc.py
index 13662792a..0c4e26ca9 100644
--- a/bbot/core/helpers/misc.py
+++ b/bbot/core/helpers/misc.py
@@ -227,13 +227,13 @@ def split_host_port(d):
 
     match = bbot_regexes.extract_open_port_regex.match(netloc)
     if match is None:
-        raise ValueError(f'split_port() failed to parse netloc "{netloc}"')
+        raise ValueError(f'split_port() failed to parse netloc "{netloc}" (original value: {d})')
 
     host = match.group(2)
     if host is None:
         host = match.group(1)
     if host is None:
-        raise ValueError(f'split_port() failed to locate host in netloc "{netloc}"')
+        raise ValueError(f'split_port() failed to locate host in netloc "{netloc}" (original value: {d})')
 
     port = match.group(3)
     if port is None and scheme is not None: