diff --git a/docs/source/examples/x_greaterthan_1.py b/docs/source/examples/x_greaterthan_1.py
index 074d0417..92ca1c6f 100644
--- a/docs/source/examples/x_greaterthan_1.py
+++ b/docs/source/examples/x_greaterthan_1.py
@@ -17,5 +17,5 @@
 sol = m.solve(verbosity=0)
 
 # print selected results
-print("Optimal cost:  %.4g" % sol["cost"])
-print("Optimal x val: %.4g" % sol["variables"][x])
+print(f"Optimal cost:  {sol['cost']:.4g}")
+print(f"Optimal x val: {sol['variables'][x]:.4g}")