diff --git a/csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs b/csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs
index d41ba5dc1959..863b6b3669c7 100644
--- a/csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs
+++ b/csharp/extractor/Semmle.Extraction.CSharp/Entities/TypeMention.cs
@@ -22,9 +22,9 @@ private TypeMention(Context cx, TypeSyntax syntax, IEntity parent, Type type, Mi
             this.loc = loc;
         }
 
-        private TypeSyntax GetArrayElementType(TypeSyntax type)
+        private TypeSyntax GetArrayElementType(TypeSyntax typeSyntax)
         {
-            switch (type)
+            switch (typeSyntax)
             {
                 case ArrayTypeSyntax ats:
                     return GetArrayElementType(ats.ElementType);
@@ -37,7 +37,7 @@ private TypeSyntax GetArrayElementType(TypeSyntax type)
                 case PointerTypeSyntax pts:
                     return GetArrayElementType(pts.ElementType);
                 default:
-                    return type;
+                    return typeSyntax;
             }
         }