diff --git a/std/haxe/macro/Printer.hx b/std/haxe/macro/Printer.hx
index 93af8f8e5a7..f84e9484e36 100644
--- a/std/haxe/macro/Printer.hx
+++ b/std/haxe/macro/Printer.hx
@@ -70,7 +70,7 @@ class Printer {
 		case OpMod: "%";
 		case OpInterval: "...";
 		case OpArrow: "=>";
-		case OpIn: " in ";
+		case OpIn: "in";
 		case OpAssignOp(op):
 			printBinop(op)
 			+ "=";