diff --git a/src/api/dotnet/Context.cs b/src/api/dotnet/Context.cs
index 3987004ef..0293fc76a 100644
--- a/src/api/dotnet/Context.cs
+++ b/src/api/dotnet/Context.cs
@@ -2488,12 +2488,12 @@ namespace Microsoft.Z3
         /// <summary>
         /// Retrieve element at index.
         /// </summary>
-        public SeqExpr MkNth(SeqExpr s, Expr index)
+        public Expr MkNth(SeqExpr s, Expr index)
         {
             Debug.Assert(s != null);
             Debug.Assert(index != null);
             CheckContextMatch(s, index);
-            return new SeqExpr(this, Native.Z3_mk_seq_nth(nCtx, s.NativeObject, index.NativeObject));
+            return Expr.Create(this, Native.Z3_mk_seq_nth(nCtx, s.NativeObject, index.NativeObject));
         }
 
         /// <summary>
diff --git a/src/api/java/Context.java b/src/api/java/Context.java
index 31c9771b1..06fe6061a 100644
--- a/src/api/java/Context.java
+++ b/src/api/java/Context.java
@@ -2051,10 +2051,10 @@ public class Context implements AutoCloseable {
     /**
      *  Retrieve element at index.
      */
-    public SeqExpr MkNth(SeqExpr s, Expr index)
+    public Expr MkNth(SeqExpr s, Expr index)
     {
         checkContextMatch(s, index);
-        return (SeqExpr) Expr.create(this, Native.mkSeqNth(nCtx(), s.getNativeObject(), index.getNativeObject()));
+        return Expr.create(this, Native.mkSeqNth(nCtx(), s.getNativeObject(), index.getNativeObject()));
     }