diff --git a/tests/test/tbsx1.pp b/tests/test/tbsx1.pp
index 1ccae2a46c..98aaf3c7e4 100644
--- a/tests/test/tbsx1.pp
+++ b/tests/test/tbsx1.pp
@@ -1,3 +1,5 @@
+{$mode objfpc}
+
 program testbitscan;
 
 function test_byte: boolean;