diff --git a/cmd/tools/vwatch.v b/cmd/tools/vwatch.v
index 9d20b9aa14..64ad444355 100644
--- a/cmd/tools/vwatch.v
+++ b/cmd/tools/vwatch.v
@@ -96,7 +96,7 @@ mut:
 	cmd_after_run   string   // a command to run after each re-run
 }
 
-[if debug_vwatch]
+[if debug_vwatch ?]
 fn (mut context Context) elog(msg string) {
 	eprintln('> vwatch $context.pid, $msg')
 }
diff --git a/examples/tetris/tetris.v b/examples/tetris/tetris.v
index 2ef9088174..fdc909d124 100644
--- a/examples/tetris/tetris.v
+++ b/examples/tetris/tetris.v
@@ -127,7 +127,7 @@ fn remap(v f32, min f32, max f32, new_min f32, new_max f32) f32 {
 	return (((v - min) * (new_max - new_min)) / (max - min)) + new_min
 }
 
-[if showfps]
+[if showfps ?]
 fn (mut game Game) showfps() {
 	game.frame++
 	last_frame_ms := f64(game.frame_sw.elapsed().microseconds()) / 1000.0
diff --git a/vlib/v/checker/tests/custom_comptime_define_if_debug.vv b/vlib/v/checker/tests/custom_comptime_define_if_debug.vv
index 87476ba3ed..380f738a56 100644
--- a/vlib/v/checker/tests/custom_comptime_define_if_debug.vv
+++ b/vlib/v/checker/tests/custom_comptime_define_if_debug.vv
@@ -3,7 +3,7 @@ fn foo(x int) {
 	println('foo, x: $x')
 }
 
-[if bar]
+[if bar ?]
 fn bar(x int) {
 	println('bar, x: $x')
 }
diff --git a/vlib/v/checker/tests/custom_comptime_define_if_flag.vv b/vlib/v/checker/tests/custom_comptime_define_if_flag.vv
index 34bb3c7de0..23e946aabc 100644
--- a/vlib/v/checker/tests/custom_comptime_define_if_flag.vv
+++ b/vlib/v/checker/tests/custom_comptime_define_if_flag.vv
@@ -1,6 +1,6 @@
 // Calls to edebug/1 should be executed only when `-d mydebug` is passed on the CLI
 // Otherwise they will not be present *at all* in the generated code.
-[if mydebug]
+[if mydebug ?]
 fn edebug(message string) {
 	println('message: $message')
 }