diff --git a/src/ServiceManagement/Compute/Commands.ServiceManagement/Extensions/Common/ExtensionRole.cs b/src/ServiceManagement/Compute/Commands.ServiceManagement/Extensions/Common/ExtensionRole.cs
index 5585fb494c8d..ab329b96f795 100644
--- a/src/ServiceManagement/Compute/Commands.ServiceManagement/Extensions/Common/ExtensionRole.cs
+++ b/src/ServiceManagement/Compute/Commands.ServiceManagement/Extensions/Common/ExtensionRole.cs
@@ -50,6 +50,7 @@ public ExtensionRole(string roleName)
                 PrefixName = RoleName = roleName.Trim();
                 PrefixName = PrefixName.Replace(".", string.Empty);
                 PrefixName = PrefixName.Replace(" ", string.Empty);
+                PrefixName = PrefixName.Replace("_", string.Empty);
                 RoleType = ExtensionRoleType.NamedRoles;
                 Default = false;
             }