diff --git a/packages/zlib/src/zlib.pp b/packages/zlib/src/zlib.pp
index a8ea5dd0cd..1846dbf008 100644
--- a/packages/zlib/src/zlib.pp
+++ b/packages/zlib/src/zlib.pp
@@ -24,9 +24,7 @@ const
   {$ifdef windows}
     libz='zlib1';
   {$else windows}
-   {$IFDEF OS2}
     libz='z';
-   {$ENDIF OS2}
   {$endif windows}
 {$endif}