diff --git a/TestSuite/ternary_byte_value.pas b/TestSuite/ternary_byte_value.pas
new file mode 100644
index 000000000..5b829f297
--- /dev/null
+++ b/TestSuite/ternary_byte_value.pas
@@ -0,0 +1,4 @@
+begin
+  var x := true ? byte(3) : byte(2);
+  Assert(x=3);
+end.
\ No newline at end of file
diff --git a/TreeConverter/TreeConversion/syntax_tree_visitor.cs b/TreeConverter/TreeConversion/syntax_tree_visitor.cs
index 3214497c5..1d0c8883b 100644
--- a/TreeConverter/TreeConversion/syntax_tree_visitor.cs
+++ b/TreeConverter/TreeConversion/syntax_tree_visitor.cs
@@ -18669,7 +18669,7 @@ namespace PascalABCCompiler.TreeConverter
                             else
                             {
                                 right = convertion_data_and_alghoritms.convert_type(right, lub);
-                                left = convertion_data_and_alghoritms.convert_type(right, lub);
+                                left = convertion_data_and_alghoritms.convert_type(left, lub);
                             }
                         }
                         else if (left.type == SystemLibrary.SystemLibrary.float_type && right.type == SystemLibrary.SystemLibrary.double_type)