diff --git a/tests/go/cat_test.go b/tests/go/cat_test.go
index c2d85797..ed1a7f16 100644
--- a/tests/go/cat_test.go
+++ b/tests/go/cat_test.go
@@ -49,7 +49,7 @@ func TestCat(t *testing.T) {
 	pwd, err := os.Getwd()
 
 	if err != nil {
-		t.Fatalf(err.Error())
+		t.Fatalf(err)
 	}
 
 	for i := 0; i < 2; i++ {
diff --git a/tests/go/solutions/cat/main.go b/tests/go/solutions/cat/main.go
index bf1463e0..02d8a229 100644
--- a/tests/go/solutions/cat/main.go
+++ b/tests/go/solutions/cat/main.go
@@ -1,10 +1,8 @@
 package main
 
 import (
-	"fmt"
 	"io"
 	"io/ioutil"
-	"log"
 	"os"
 )
 
@@ -12,14 +10,13 @@ func main() {
 	size := len(os.Args)
 	if size == 1 {
 		if _, err := io.Copy(os.Stdout, os.Stdin); err != nil {
-			log.Fatal(err)
+			panic(err)
 		}
 	} else {
 		for i := 1; i < size; i++ {
 			data, err := ioutil.ReadFile(os.Args[i])
 			if err != nil {
-				fmt.Println(err.Error())
-				return
+				panic(err)
 			}
 			fmt.Print(string(data))
 		}
diff --git a/tests/go/solutions/displayfile/main.go b/tests/go/solutions/displayfile/main.go
index 616c9c10..4b33ae14 100644
--- a/tests/go/solutions/displayfile/main.go
+++ b/tests/go/solutions/displayfile/main.go
@@ -20,7 +20,7 @@ func main() {
 	data, err := ioutil.ReadFile(fileName)
 
 	if err != nil {
-		fmt.Println(err.Error())
+		fmt.Println(err)
 		return
 	}
 
diff --git a/tests/go/solutions/raid3/raid1aProg/raid1a.go b/tests/go/solutions/raid3/raid1aProg/raid1a.go
index c7a6919a..47ef74fa 100644
--- a/tests/go/solutions/raid3/raid1aProg/raid1a.go
+++ b/tests/go/solutions/raid3/raid1aProg/raid1a.go
@@ -14,7 +14,7 @@ func main() {
 		secundArg, err2 := strconv.Atoi(os.Args[2])
 
 		if err != nil || err2 != nil {
-			fmt.Println(err.Error())
+			fmt.Println(err)
 		}
 		solutions.Raid1a(firstArg, secundArg)
 	} else {
diff --git a/tests/go/solutions/raid3/raid1bProg/raid1b.go b/tests/go/solutions/raid3/raid1bProg/raid1b.go
index 87979317..0e7e2eaf 100644
--- a/tests/go/solutions/raid3/raid1bProg/raid1b.go
+++ b/tests/go/solutions/raid3/raid1bProg/raid1b.go
@@ -14,7 +14,7 @@ func main() {
 		secundArg, err2 := strconv.Atoi(os.Args[2])
 
 		if err != nil || err2 != nil {
-			fmt.Println(err.Error())
+			fmt.Println(err)
 		}
 		solutions.Raid1b(firstArg, secundArg)
 	} else {
diff --git a/tests/go/solutions/raid3/raid1cProg/raid1c.go b/tests/go/solutions/raid3/raid1cProg/raid1c.go
index 59ad18f2..5fc5ec3f 100644
--- a/tests/go/solutions/raid3/raid1cProg/raid1c.go
+++ b/tests/go/solutions/raid3/raid1cProg/raid1c.go
@@ -14,7 +14,7 @@ func main() {
 		secundArg, err2 := strconv.Atoi(os.Args[2])
 
 		if err != nil || err2 != nil {
-			fmt.Println(err.Error())
+			fmt.Println(err)
 		}
 		solutions.Raid1c(firstArg, secundArg)
 	} else {
diff --git a/tests/go/solutions/raid3/raid1dProg/raid1d.go b/tests/go/solutions/raid3/raid1dProg/raid1d.go
index 7daf0d68..2bc10769 100644
--- a/tests/go/solutions/raid3/raid1dProg/raid1d.go
+++ b/tests/go/solutions/raid3/raid1dProg/raid1d.go
@@ -14,7 +14,7 @@ func main() {
 		secundArg, err2 := strconv.Atoi(os.Args[2])
 
 		if err != nil || err2 != nil {
-			fmt.Println(err.Error())
+			fmt.Println(err)
 		}
 		solutions.Raid1d(firstArg, secundArg)
 	} else {
diff --git a/tests/go/solutions/raid3/raid1eProg/raid1e.go b/tests/go/solutions/raid3/raid1eProg/raid1e.go
index c483a88c..a53fefe7 100644
--- a/tests/go/solutions/raid3/raid1eProg/raid1e.go
+++ b/tests/go/solutions/raid3/raid1eProg/raid1e.go
@@ -14,7 +14,7 @@ func main() {
 		secundArg, err2 := strconv.Atoi(os.Args[2])
 
 		if err != nil || err2 != nil {
-			fmt.Println(err.Error())
+			fmt.Println(err)
 		}
 		solutions.Raid1e(firstArg, secundArg)
 	} else {
diff --git a/tests/go/solutions/range/main.go b/tests/go/solutions/range/main.go
index db390125..6c948766 100644
--- a/tests/go/solutions/range/main.go
+++ b/tests/go/solutions/range/main.go
@@ -14,7 +14,7 @@ func main() {
 			secondArg, err = strconv.Atoi(os.Args[2])
 		}
 		if err != nil {
-			fmt.Println(err.Error())
+			fmt.Println(err)
 			return
 		}
 		fmt.Println(rangeOf(firstArg, secondArg))
diff --git a/tests/go/solutions/reverserange/main.go b/tests/go/solutions/reverserange/main.go
index 78e67875..a86af8c8 100644
--- a/tests/go/solutions/reverserange/main.go
+++ b/tests/go/solutions/reverserange/main.go
@@ -14,7 +14,7 @@ func main() {
 			secondArg, err = strconv.Atoi(os.Args[2])
 		}
 		if err != nil {
-			fmt.Println(err.Error())
+			fmt.Println(err)
 			return
 		}
 		fmt.Println(reverseRange(firstArg, secondArg))
diff --git a/tests/go/solutions/ztail/main.go b/tests/go/solutions/ztail/main.go
index 0e4d2bdc..9a830083 100644
--- a/tests/go/solutions/ztail/main.go
+++ b/tests/go/solutions/ztail/main.go
@@ -42,7 +42,7 @@ func fileSize(fi *os.File) int64 {
 	fil, err := fi.Stat()
 
 	if err != nil {
-		fmt.Println(err.Error())
+		fmt.Println(err)
 		return 0
 	}