diff --git a/src/System.Drawing.Common/src/Unix/System.Drawing.Imaging/Metafile.cs b/src/System.Drawing.Common/src/Unix/System.Drawing.Imaging/Metafile.cs
index d7d81ee9a2b5..2b2e69fb9ba0 100644
--- a/src/System.Drawing.Common/src/Unix/System.Drawing.Imaging/Metafile.cs
+++ b/src/System.Drawing.Common/src/Unix/System.Drawing.Imaging/Metafile.cs
@@ -68,7 +68,7 @@ internal Metafile(IntPtr ptr, Stream stream)
         public Metafile(Stream stream)
         {
             if (stream == null)
-                throw new ArgumentException("stream");
+                throw new ArgumentNullException("stream");
 
             Status status;
             if (GDIPlus.RunningOnUnix())
diff --git a/src/System.Drawing.Common/src/Unix/System.Drawing/Image.cs b/src/System.Drawing.Common/src/Unix/System.Drawing/Image.cs
index 7c8d2cb645cb..79ebf13644ee 100644
--- a/src/System.Drawing.Common/src/Unix/System.Drawing/Image.cs
+++ b/src/System.Drawing.Common/src/Unix/System.Drawing/Image.cs
@@ -283,7 +283,7 @@ public static bool IsExtendedPixelFormat(PixelFormat pixfmt)
         internal static IntPtr InitFromStream(Stream stream)
         {
             if (stream == null)
-                throw new ArgumentException("stream");
+                throw new ArgumentNullException(nameof(stream));
 
             IntPtr imagePtr;
             Status st;