diff --git a/pystencils/sympyextensions.py b/pystencils/sympyextensions.py
index f788dbcd89850503e3116598e48b359b037eebb7..6d015ad9c9c0f446dc4a1d79acf4be422ca08d77 100644
--- a/pystencils/sympyextensions.py
+++ b/pystencils/sympyextensions.py
@@ -260,8 +260,8 @@ def subs_additive(expr: sp.Expr, replacement: sp.Expr, subexpression: sp.Expr,
         if not param_list:
             return current_expr
         else:
-            if current_expr.func == sp.Mul and sp.numbers.Zero() in param_list:
-                return sp.numbers.Zero()
+            if current_expr.func == sp.Mul and sp.core.numbers.Zero() in param_list:
+                return sp.n.core.numbers.Zero()
             else:
                 return current_expr.func(*param_list, evaluate=False)