diff --git a/apio/pkg_util.py b/apio/pkg_util.py
index 450fa661..2367cba2 100644
--- a/apio/pkg_util.py
+++ b/apio/pkg_util.py
@@ -344,9 +344,10 @@ def scan_packages(resources: Resources) -> PackageScanResults:
 def _list_section(title: str, items: List[List[str]], color: str) -> None:
     """A helper function for printing one serction of list_packages()."""
     # -- Construct horizontal lines at terminal width.
-    output_config = util.get_terminal_config()
-    line = "─" * output_config.terminal_width
-    dline = "═" * output_config.terminal_width
+    config = util.get_terminal_config()
+    line_width = config.terminal_width if config.terminal_mode() else 80
+    line = "─" * line_width
+    dline = "═" * line_width
 
     # -- Print the section.
     click.secho()