diff --git a/internal/cmd/config/profile/delete/delete.go b/internal/cmd/config/profile/delete/delete.go
index 7916d27b6..d468d93ed 100644
--- a/internal/cmd/config/profile/delete/delete.go
+++ b/internal/cmd/config/profile/delete/delete.go
@@ -51,6 +51,10 @@ func NewCmd(p *print.Printer) *cobra.Command {
 				return &errors.DeleteInexistentProfile{Profile: model.Profile}
 			}
 
+			if model.Profile == config.DefaultProfileName {
+				return &errors.DeleteDefaultProfile{DefaultProfile: config.DefaultProfileName}
+			}
+
 			if !model.AssumeYes {
 				prompt := fmt.Sprintf("Are you sure you want to delete profile %q? (This cannot be undone)", model.Profile)
 				err = p.PromptForConfirmation(prompt)
diff --git a/internal/pkg/auth/storage.go b/internal/pkg/auth/storage.go
index 20018a70e..d44cc1133 100644
--- a/internal/pkg/auth/storage.go
+++ b/internal/pkg/auth/storage.go
@@ -5,10 +5,12 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+
 	"os"
 	"path/filepath"
 
 	"github.com/stackitcloud/stackit-cli/internal/pkg/config"
+	pkgErrors "github.com/stackitcloud/stackit-cli/internal/pkg/errors"
 
 	"github.com/zalando/go-keyring"
 )
@@ -277,6 +279,10 @@ func DeleteProfileFromKeyring(profile string) error {
 		return fmt.Errorf("validate profile: %w", err)
 	}
 
+	if profile == config.DefaultProfileName {
+		return &pkgErrors.DeleteDefaultProfile{DefaultProfile: config.DefaultProfileName}
+	}
+
 	for _, key := range authFieldKeys {
 		err := deleteAuthFieldInKeyring(profile, key)
 		if err != nil {
diff --git a/internal/pkg/auth/storage_test.go b/internal/pkg/auth/storage_test.go
index 9f603e145..1591a024f 100644
--- a/internal/pkg/auth/storage_test.go
+++ b/internal/pkg/auth/storage_test.go
@@ -552,34 +552,20 @@ func TestDeleteProfileFromKeyring(t *testing.T) {
 		activeProfile string
 		isValid       bool
 	}{
+
 		{
-			description:   "base, default profile",
-			keys:          authFieldKeys,
-			activeProfile: config.DefaultProfileName,
-			isValid:       true,
-		},
-		{
-			description: "missing keys, default profile",
-			keys: []authFieldKey{
-				ACCESS_TOKEN,
-				SERVICE_ACCOUNT_EMAIL,
-			},
-			activeProfile: config.DefaultProfileName,
-			isValid:       true,
-		},
-		{
-			description:   "base, custom profile",
+			description:   "base",
 			keys:          authFieldKeys,
 			activeProfile: "test-profile",
 			isValid:       true,
 		},
 		{
-			description: "missing keys, custom profile",
+			description: "missing keys",
 			keys: []authFieldKey{
 				ACCESS_TOKEN,
 				SERVICE_ACCOUNT_EMAIL,
 			},
-			activeProfile: config.DefaultProfileName,
+			activeProfile: "test-profile",
 			isValid:       true,
 		},
 		{
@@ -592,6 +578,11 @@ func TestDeleteProfileFromKeyring(t *testing.T) {
 			keyringFails: true,
 			isValid:      false,
 		},
+		{
+			description:   "default profile",
+			activeProfile: config.DefaultProfileName,
+			isValid:       false,
+		},
 	}
 
 	for _, tt := range tests {
diff --git a/internal/pkg/config/profiles.go b/internal/pkg/config/profiles.go
index bc05dc970..703031d27 100644
--- a/internal/pkg/config/profiles.go
+++ b/internal/pkg/config/profiles.go
@@ -275,7 +275,7 @@ func ListProfiles() ([]string, error) {
 }
 
 // DeleteProfile deletes a profile.
-// If the profile does not exist, it returns an error.
+// If the profile does not exist or is the default profile, it returns an error.
 // If the profile is the active profile, it sets the active profile to the default profile.
 func DeleteProfile(p *print.Printer, profile string) error {
 	err := ValidateProfile(profile)
@@ -283,6 +283,11 @@ func DeleteProfile(p *print.Printer, profile string) error {
 		return fmt.Errorf("validate profile: %w", err)
 	}
 
+	// Default profile cannot be deleted
+	if profile == DefaultProfileName {
+		return &errors.DeleteDefaultProfile{DefaultProfile: DefaultProfileName}
+	}
+
 	activeProfile, err := GetProfile()
 	if err != nil {
 		return fmt.Errorf("get active profile: %w", err)
diff --git a/internal/pkg/errors/errors.go b/internal/pkg/errors/errors.go
index 17fc29ccf..68d281cdd 100644
--- a/internal/pkg/errors/errors.go
+++ b/internal/pkg/errors/errors.go
@@ -48,6 +48,8 @@ To create it, run:
 To list all profiles, run:
   $ stackit config profile list`
 
+	DELETE_DEFAULT_PROFILE = `the default configuration profile %q cannot be deleted.`
+
 	ARGUS_INVALID_INPUT_PLAN = `the instance plan was not correctly provided. 
 
 Either provide the plan ID:
@@ -173,6 +175,14 @@ func (e *DeleteInexistentProfile) Error() string {
 	return fmt.Sprintf(DELETE_INEXISTENT_PROFILE, e.Profile)
 }
 
+type DeleteDefaultProfile struct {
+	DefaultProfile string
+}
+
+func (e *DeleteDefaultProfile) Error() string {
+	return fmt.Sprintf(DELETE_DEFAULT_PROFILE, e.DefaultProfile)
+}
+
 type ArgusInputPlanError struct {
 	Cmd  *cobra.Command
 	Args []string