# sympy__sympy-15609
# Loki Mode Multi-Agent Patch
# Attempts: 1

--- a/sympy/printing/latex.py
+++ b/sympy/printing/latex.py
@@ -1438,7 +1438,7 @@ def _print_MatrixElement(self, expr):
-        return self.parenthesize(expr.parent, PRECEDENCE["Atom"], strict=True) \
-            + '_{%s, %s}' % (expr.i, expr.j)
+        return self.parenthesize(expr.parent, PRECEDENCE["Atom"], strict=True) \
+            + '_{%s, %s}' % (self._print(expr.i), self._print(expr.j))