diff --git a/packages/markitdown/src/markitdown/converter_utils/docx/math/omml.py b/packages/markitdown/src/markitdown/converter_utils/docx/math/omml.py
index dfa734cdc..c67bc4890 100644
--- a/packages/markitdown/src/markitdown/converter_utils/docx/math/omml.py
+++ b/packages/markitdown/src/markitdown/converter_utils/docx/math/omml.py
@@ -373,7 +373,7 @@ def do_r(self, elm):
         @todo \text (latex pure text support)
         """
         _str = []
-        for s in elm.findtext("./{0}t".format(OMML_NS)):
+        for s in (elm.findtext("./{0}t".format(OMML_NS)) or ""):
             # s = s if isinstance(s,unicode) else unicode(s,'utf-8')
             _str.append(self._t_dict.get(s, s))
         return escape_latex(BLANK.join(_str))