@@ -24,11 +24,11 @@
 #include <sys/types.h>
 
 #import "OFStream.h"
 #import "OFString.h"
 
-#ifdef _WIN32
+#ifdef OF_WINDOWS
 # include <windows.h>
 #endif
 
 OF_ASSUME_NONNULL_BEGIN
 
@@ -40,11 +40,11 @@
  *
  * @brief A class for stream-like communication with a newly created process.
  */
 @interface OFProcess: OFStream
 {
-#ifndef _WIN32
+#ifndef OF_WINDOWS
 	pid_t _pid;
 	int _readPipe[2], _writePipe[2];
 #else
 	HANDLE _process, _readPipe[2], _writePipe[2];
 #endif