diff --git a/pysr/export_sympy.py b/pysr/export_sympy.py
index 81142f481..e10609bde 100644
--- a/pysr/export_sympy.py
+++ b/pysr/export_sympy.py
@@ -47,6 +47,8 @@
     "ceil": sympy.ceiling,
     "sign": sympy.sign,
     "gamma": sympy.gamma,
+    "max": lambda x, y: sympy.Piecewise((y, x < y), (x, True)),
+    "min": lambda x, y: sympy.Piecewise((x, x < y), (y, True)),
 }