diff --git a/exercises/00-sqrt/go.go b/exercises/00-sqrt/go.go
index 972ce38..527404e 100644
--- a/exercises/00-sqrt/go.go
+++ b/exercises/00-sqrt/go.go
@@ -8,7 +8,7 @@ import (
 )
 
 const usage = "usage: sqrt <number>"
-const min_threshold = 1e-200
+const min_threshold = 1e-16
 
 type ErrNegativeSqrt float64
 
@@ -50,7 +50,7 @@ func main() {
 		if err != nil {
 			panic(err)
 		}
-		fmt.Printf("%0.4g %0.2d %0.20f %0.20f %0.4g\n",
+		fmt.Printf("%0.4E %0.4d %0.20f %0.20f %0.4e\n",
             threshold, iterations, right_answer, answer, 
             right_answer-answer)
 		threshold = threshold / 10.0