diff --git a/TestSuite/extensionmethods34.pas b/TestSuite/extensionmethods34.pas
new file mode 100644
index 000000000..a23e865be
--- /dev/null
+++ b/TestSuite/extensionmethods34.pas
@@ -0,0 +1,7 @@
+type
+  c1 = class end;
+
+begin
+  var v1: array [,] of c1 := ((new c1, new c1),(new c1, new c1));
+  v1.Print;
+end.
\ No newline at end of file
diff --git a/TreeConverter/TreeConversion/convertion_data_and_alghoritms.cs b/TreeConverter/TreeConversion/convertion_data_and_alghoritms.cs
index 4fbaa46f2..8c5f5dd4e 100644
--- a/TreeConverter/TreeConversion/convertion_data_and_alghoritms.cs
+++ b/TreeConverter/TreeConversion/convertion_data_and_alghoritms.cs
@@ -1372,7 +1372,7 @@ namespace PascalABCCompiler.TreeConverter
             {
                 for (var i = 0; i < left_original.parameters.Count; i++)
                 {
-                    if (left_original.parameters[i].is_params || right_original.parameters[i].is_params)
+                    if (left_original.parameters[i].is_params || i < right_original.parameters.Count && right_original.parameters[i].is_params || i >= right_original.parameters.Count)
                     {
                         return MoreSpecific.None;
                     }