diff --git a/Interop/DetectOS.cs b/Interop/DetectOS.cs
index 6ae39f6..3a23b56 100644
--- a/Interop/DetectOS.cs
+++ b/Interop/DetectOS.cs
@@ -84,11 +84,11 @@ namespace Aaru.CommonTypes.Interop
                     var principal = new WindowsPrincipal(user);
                     isAdmin = principal.IsInRole(WindowsBuiltInRole.Administrator);
                 }
-                catch(UnauthorizedAccessException ex)
+                catch(UnauthorizedAccessException)
                 {
                     isAdmin = false;
                 }
-                catch(Exception ex)
+                catch(Exception)
                 {
                     isAdmin = false;
                 }
diff --git a/Metadata/Dimensions.cs b/Metadata/Dimensions.cs
index 4a20908..0c9bc16 100644
--- a/Metadata/Dimensions.cs
+++ b/Metadata/Dimensions.cs
@@ -38,6 +38,8 @@
 
 using Schemas;
 
+#pragma warning disable 612
+
 namespace Aaru.CommonTypes.Metadata
 {
     public static class Dimensions
diff --git a/Metadata/MediaType.cs b/Metadata/MediaType.cs
index 0de6019..2fcabec 100644
--- a/Metadata/MediaType.cs
+++ b/Metadata/MediaType.cs
@@ -36,6 +36,7 @@
 // Copyright © 2011-2020 Natalia Portillo
 // ****************************************************************************/
 
+#pragma warning disable 612
 namespace Aaru.CommonTypes.Metadata
 {
     public static class MediaType