diff --git a/builder/scaleway/ssh.go b/builder/scaleway/ssh.go
index a2c9b8f16..946c2046f 100644
--- a/builder/scaleway/ssh.go
+++ b/builder/scaleway/ssh.go
@@ -46,7 +46,7 @@ func sshConfig(state multistep.StateBag) (*ssh.ClientConfig, error) {
 	}
 
 	if config.Comm.SSHPrivateKey != "" {
-		if priv, ok := state.GetOk("privateKey"); ok {
+		if priv, ok := state.GetOk("private_key"); ok {
 			privateKey = priv.(string)
 		}
 		signer, err := ssh.ParsePrivateKey([]byte(privateKey))
diff --git a/builder/scaleway/step_create_ssh_key.go b/builder/scaleway/step_create_ssh_key.go
index c5405ccd6..4272d9ff4 100644
--- a/builder/scaleway/step_create_ssh_key.go
+++ b/builder/scaleway/step_create_ssh_key.go
@@ -36,7 +36,7 @@ func (s *stepCreateSSHKey) Run(_ context.Context, state multistep.StateBag) mult
 			return multistep.ActionHalt
 		}
 
-		state.Put("privateKey", string(privateKeyBytes))
+		state.Put("private_key", string(privateKeyBytes))
 		state.Put("ssh_pubkey", "")
 
 		return multistep.ActionContinue
@@ -61,7 +61,7 @@ func (s *stepCreateSSHKey) Run(_ context.Context, state multistep.StateBag) mult
 	}
 
 	// Set the private key in the statebag for later
-	state.Put("privateKey", string(pem.EncodeToMemory(&priv_blk)))
+	state.Put("private_key", string(pem.EncodeToMemory(&priv_blk)))
 
 	pub, _ := ssh.NewPublicKey(&priv.PublicKey)
 	pub_sshformat := string(ssh.MarshalAuthorizedKey(pub))