diff --git a/tests/D2L.CodeStyle.Analyzers.Test/Specs/ImmutabilityAnalyzer.cs b/tests/D2L.CodeStyle.Analyzers.Test/Specs/ImmutabilityAnalyzer.cs
index c5b0089a..d0798b99 100644
--- a/tests/D2L.CodeStyle.Analyzers.Test/Specs/ImmutabilityAnalyzer.cs
+++ b/tests/D2L.CodeStyle.Analyzers.Test/Specs/ImmutabilityAnalyzer.cs
@@ -1461,4 +1461,10 @@ static ClassWithCapturedMutability() {
 			SometimesBad2 = static () => 2;
         }
     }
+
+	[Immutable]
+	public class ClassPrimaryConstructor( ClassPrimaryConstructor other ) {
+		private readonly int m_x;
+		private int m_y;
+	}
 }