diff --git a/openpype/vendor/python/common/capture.py b/openpype/vendor/python/common/capture.py
index 09a42d84d1..e99ea5438d 100644
--- a/openpype/vendor/python/common/capture.py
+++ b/openpype/vendor/python/common/capture.py
@@ -733,6 +733,14 @@ def _applied_viewport_options(options, panel):
 
     options = dict(ViewportOptions, **(options or {}))
 
+    # BUGFIX Maya 2020 some keys in viewport options dict may not be unicode
+    #        This is a local OpenPype edit to capture.py for issue #4730
+    # TODO: Remove when dropping Maya 2020 compatibility
+    if int(cmds.about(version=True)) <= 2020:
+        options = {
+            str(key): value for key, value in options.items()
+        }
+
     # separate the plugin display filter options since they need to
     # be set differently (see #55)
     plugins = cmds.pluginDisplayFilter(query=True, listFilters=True)