diff --git a/src/libraries/System.Linq/src/System/Linq/SequenceEqual.cs b/src/libraries/System.Linq/src/System/Linq/SequenceEqual.cs
index d1d6dc1586b0f5..ff4c32200a5c34 100644
--- a/src/libraries/System.Linq/src/System/Linq/SequenceEqual.cs
+++ b/src/libraries/System.Linq/src/System/Linq/SequenceEqual.cs
@@ -24,9 +24,9 @@ public static bool SequenceEqual<TSource>(this IEnumerable<TSource> first, IEnum
 
             if (first is ICollection<TSource> firstCol && second is ICollection<TSource> secondCol)
             {
-                if (first is TSource[] firstArray && second is TSource[] secondArray)
+                if (first.TryGetSpan(out ReadOnlySpan<TSource> firstSpan) && second.TryGetSpan(out ReadOnlySpan<TSource> secondSpan))
                 {
-                    return ((ReadOnlySpan<TSource>)firstArray).SequenceEqual(secondArray, comparer);
+                    return firstSpan.SequenceEqual(secondSpan, comparer);
                 }
 
                 if (firstCol.Count != secondCol.Count)