diff --git a/src/fileio.cpp b/src/fileio.cpp
index b837d4005f..b59de557b3 100644
--- a/src/fileio.cpp
+++ b/src/fileio.cpp
@@ -657,6 +657,9 @@ bool ExtractTar(const std::string &tar_filename, Subdirectory subdir)
  * @note defined in the OS related files (win32.cpp, unix.cpp etc)
  */
 extern void DetermineBasePaths(std::string_view exe);
+
+/** Mimicks the getcwd from POSIX for Windows. */
+char *getcwd(char *buf, size_t size);
 #else /* defined(_WIN32) */
 
 /**
diff --git a/src/stdafx.h b/src/stdafx.h
index f72b1ad9ee..cf75d44b1a 100644
--- a/src/stdafx.h
+++ b/src/stdafx.h
@@ -157,8 +157,6 @@ using namespace std::literals::string_view_literals;
 
 #if !defined(STRGEN) && !defined(SETTINGSGEN)
 #	if defined(_WIN32)
-		char *getcwd(char *buf, size_t size);
-
 		std::string FS2OTTD(std::wstring_view name);
 		std::wstring OTTD2FS(std::string_view name);
 #	elif defined(WITH_ICONV)