diff --git a/src/libraries/System.Private.CoreLib/src/System/Random.CompatImpl.cs b/src/libraries/System.Private.CoreLib/src/System/Random.CompatImpl.cs
index 1f64d8665d3b1a..645bce98764de8 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Random.CompatImpl.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Random.CompatImpl.cs
@@ -335,6 +335,8 @@ internal void NextBytes(Span<byte> buffer)
                 }
             }
 
+            // Inlining this into hot caller loops can produce branch-heavy code that is slower than the standalone method.
+            [MethodImpl(MethodImplOptions.NoInlining)]
             internal int InternalSample()
             {
                 Debug.Assert(_seedArray is not null);