diff --git a/components/powerpdf/PdfDoc.pas b/components/powerpdf/PdfDoc.pas
index 8ede8ec56..295b6a739 100644
--- a/components/powerpdf/PdfDoc.pas
+++ b/components/powerpdf/PdfDoc.pas
@@ -51,7 +51,7 @@ interface
 
 uses
   SysUtils, Classes
-  {$IFDEF LINUX}
+  {$IFDEF UNIX}
   , Types
   {$ELSE}
   , Windows
diff --git a/components/powerpdf/PdfTypes.pas b/components/powerpdf/PdfTypes.pas
index d3b923c50..392974e67 100644
--- a/components/powerpdf/PdfTypes.pas
+++ b/components/powerpdf/PdfTypes.pas
@@ -38,7 +38,7 @@ interface
 
 uses
   SysUtils, Classes
-{$IFNDEF LINUX}
+{$IFNDEF UNIX}
   , Windows
 {$ENDIF}
 {$IFNDEF NOZLIB}