diff --git a/tests/python/modules/render_report.py b/tests/python/modules/render_report.py
index 1117a7dcfa2..56b7d88d8bd 100755
--- a/tests/python/modules/render_report.py
+++ b/tests/python/modules/render_report.py
@@ -96,8 +96,12 @@ class Report:
 
     def __init__(self, title, output_dir, oiiotool, variation=None, blocklist=[]):
         self.title = title
-        self.output_dir = output_dir
-        self.global_dir = os.path.dirname(output_dir)
+
+        # Normalize the path to avoid output_dir and global_dir being the same when a directory
+        # ends with a trailing slash.
+        self.output_dir = os.path.normpath(output_dir)
+        self.global_dir = os.path.dirname(self.output_dir)
+
         self.reference_dir = 'reference_renders'
         self.reference_override_dir = None
         self.oiiotool = oiiotool