diff --git a/outscale/data_source_outscale_volumes.go b/outscale/data_source_outscale_volumes.go
index b94e1dfb2..16e57eafb 100644
--- a/outscale/data_source_outscale_volumes.go
+++ b/outscale/data_source_outscale_volumes.go
@@ -190,5 +190,5 @@ func getIops(volumeType string, iops int32) int32 {
 	if volumeType != "standard" {
 		return iops
 	}
-	return defaultIops
+	return utils.DefaultIops
 }
diff --git a/outscale/resource_outscale_nic_link.go b/outscale/resource_outscale_nic_link.go
index 44546a086..9e97d2821 100644
--- a/outscale/resource_outscale_nic_link.go
+++ b/outscale/resource_outscale_nic_link.go
@@ -117,7 +117,7 @@ func resourceOutscaleOAPINetworkInterfaceAttachmentRead(d *schema.ResourceData,
 	resp, err := stateConf.WaitForState()
 	if err != nil {
 		return fmt.Errorf(
-			"Error waiting for Volume to attach to Instance: %s, error: %s", nicID, err)
+			"Error waiting for NIC to attach to Instance: %s, error: %s", nicID, err)
 	}
 
 	r := resp.(oscgo.ReadNicsResponse)
@@ -206,7 +206,7 @@ func resourceOutscaleNetworkInterfaceAttachmentImportState(d *schema.ResourceDat
 	resp, err := stateConf.WaitForState()
 	if err != nil {
 		return nil, fmt.Errorf(
-			"Error waiting for Volume to attach to Instance: %s, error: %s", d.Id(), err)
+			"Error waiting for NIC to attach to Instance: %s, error: %s", d.Id(), err)
 	}
 	r := resp.(oscgo.ReadNicsResponse)
 	linkNic := r.GetNics()[0].GetLinkNic()
diff --git a/outscale/resource_outscale_volume.go b/outscale/resource_outscale_volume.go
index 20da335cf..e4581e868 100644
--- a/outscale/resource_outscale_volume.go
+++ b/outscale/resource_outscale_volume.go
@@ -15,8 +15,6 @@ import (
 	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 )
 
-const defaultIops = 150
-
 func resourceOutscaleOAPIVolume() *schema.Resource {
 	return &schema.Resource{
 		Create: resourceOAPIVolumeCreate,
diff --git a/utils/utils.go b/utils/utils.go
index e0ec3c613..5172415fc 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -26,7 +26,7 @@ const (
 	MaxPort         int     = 65535
 	MinIops         int     = 100
 	MaxIops         int     = 13000
-	DefaultIops     int     = 150
+	DefaultIops     int32   = 150
 	MaxSize         int     = 14901
 	InvalidState    string  = "InvalidState"
 	VolumeIOPSError string  = `