diff --git a/pystencils/backends/cbackend.py b/pystencils/backends/cbackend.py
index 5160fafd483db221baef1bb36c4a58274e3c7f81..59d9011d4e644401049260931ebb9d15f66cce43 100644
--- a/pystencils/backends/cbackend.py
+++ b/pystencils/backends/cbackend.py
@@ -385,7 +385,8 @@ class CustomSympyPrinter(CCodePrinter):
         elif expr.func == int_div:
             return "((%s) / (%s))" % (self._print(expr.args[0]), self._print(expr.args[1]))
         else:
-            return super(CustomSympyPrinter, self)._print_Function(expr)
+            arg_str = ', '.join(self._print(a) for a in expr.args)
+            return f'{expr.name}({arg_str})'
 
     def _typed_number(self, number, dtype):
         res = self._print(number)