diff --git a/internal/report/console/console.go b/internal/report/console/console.go
index efca37f..f660616 100644
--- a/internal/report/console/console.go
+++ b/internal/report/console/console.go
@@ -10,7 +10,6 @@ import (
 	"github.com/jedib0t/go-pretty/v6/table"
 	"github.com/jedib0t/go-pretty/v6/text"
 	"github.com/rs/zerolog/log"
-	"github.com/sergi/go-diff/diffmatchpatch"
 	"gitlab.com/TECHNOFAB/nixtest/internal/types"
 	"gitlab.com/TECHNOFAB/nixtest/internal/util"
 )
@@ -25,16 +24,10 @@ func PrintErrors(results types.Results, noColor bool) {
 			fmt.Println(text.FgRed.Sprintf("⚠ Test \"%s/%s\" failed:", result.Spec.Suite, result.Spec.Name))
 			message := result.ErrorMessage
 			if result.Status == types.StatusFailure && message == "" {
-				if noColor {
-					var err error
-					message, err = util.ComputeDiff(result.Expected, result.Actual)
-					if err != nil {
-						log.Panic().Err(err).Msg("failed to compute diff")
-					}
-				} else {
-					dmp := diffmatchpatch.New()
-					diffs := dmp.DiffMain(result.Expected, result.Actual, true)
-					message = fmt.Sprintf("Diff:\n%s", dmp.DiffPrettyText(diffs))
+				var err error
+				message, err = util.ComputeDiff(result.Expected, result.Actual)
+				if err != nil {
+					log.Panic().Err(err).Msg("failed to compute diff")
 				}
 			}
 
diff --git a/lib/scriptHelpers.sh b/lib/scriptHelpers.sh
index b1e3514..ba08e47 100644
--- a/lib/scriptHelpers.sh
+++ b/lib/scriptHelpers.sh
@@ -11,16 +11,16 @@ function assert_not_eq() {
   assert "$1 -ne $2" "$3"
 }
 function assert_contains() {
-  echo "$1" | grep -q -- "$2" || {
-    echo "Assertion failed: $3. $1 does not contain $2" >&2;
+  echo -n "$1" | grep -q -- "$2" || {
+    echo "Assertion failed: $3. The following does not contain $2: $1" >&2;
     exit 1;
   }
 }
 function assert_not_contains() {
-  echo "$1" | grep -q -- "$2" && {
-    echo "Assertion failed: $3. $1 does contain $2" >&2;
+  echo -n "$1" | grep -q -- "$2" && {
+    echo "Assertion failed: $3. The following does contain $2: $1" >&2;
     exit 1;
-  }
+  } || true
 }
 function assert_file_contains() {
   grep -q -- "$2" $1 || {