diff --git a/src/unix.cpp b/src/unix.cpp
--- a/src/unix.cpp
+++ b/src/unix.cpp
@@ -7,7 +7,6 @@
 #include "string.h"
 #include "table/strings.h"
 #include "variables.h"
-#include "fileio.h"
 
 #include <dirent.h>
 #include <unistd.h>
@@ -101,18 +100,6 @@ bool FiosIsHiddenFile(const struct diren
 	return ent->d_name[0] == '.';
 }
 
-#if defined(__BEOS__) || defined(__linux__)
-static void ChangeWorkingDirectory(char *exe)
-{
-	char *s = strrchr(exe, '/');
-	if (s != NULL) {
-		*s = '\0';
-		chdir(exe);
-		*s = '/';
-	}
-}
-#endif
-
 void ShowInfo(const char *str)
 {
 	fprintf(stderr, "%s\n", str);
@@ -131,7 +118,6 @@ void ShowOSErrorBox(const char *buf)
 }
 
 #ifdef WITH_COCOA
-void cocoaSetWorkingDirectory();
 void cocoaSetupAutoreleasePool();
 void cocoaReleaseAutoreleasePool();
 #endif
@@ -146,15 +132,9 @@ int CDECL main(int argc, char* argv[])
 	if (argc >= 2 && strncmp(argv[1], "-psn", 4) == 0) {
 		argv[1] = NULL;
 		argc = 1;
-		cocoaSetWorkingDirectory();
 	}
 #endif
 
-	// change the working directory to enable doubleclicking in UIs
-#if defined(__BEOS__) || defined(__linux__)
-	ChangeWorkingDirectory(argv[0]);
-#endif
-
 	_random_seeds[1][1] = _random_seeds[1][0] = _random_seeds[0][1] = _random_seeds[0][0] = time(NULL);
 	SeedMT(_random_seeds[0][1]);
 
@@ -169,43 +149,6 @@ int CDECL main(int argc, char* argv[])
 	return ret;
 }
 
-void DetermineBasePaths()
-{
-	_paths.game_data_dir = MallocT<char>(MAX_PATH);
-	ttd_strlcpy(_paths.game_data_dir, GAME_DATA_DIR, MAX_PATH);
-#if defined(SECOND_DATA_DIR)
-	_paths.second_data_dir = MallocT<char>(MAX_PATH);
-	ttd_strlcpy(_paths.second_data_dir, SECOND_DATA_DIR, MAX_PATH);
-#endif
-
-#if defined(USE_HOMEDIR)
-	const char *homedir = getenv("HOME");
-
-	if (homedir == NULL) {
-		const struct passwd *pw = getpwuid(getuid());
-		if (pw != NULL) homedir = pw->pw_dir;
-	}
-
-	_paths.personal_dir = str_fmt("%s" PATHSEP "%s", homedir, PERSONAL_DIR);
-#else /* not defined(USE_HOMEDIR) */
-	_paths.personal_dir = MallocT<char>(MAX_PATH);
-	ttd_strlcpy(_paths.personal_dir, PERSONAL_DIR, MAX_PATH);
-
-	/* check if absolute or relative path */
-	const char *s = strchr(_paths.personal_dir, PATHSEPCHAR);
-
-	/* add absolute path */
-	if (s == NULL || _paths.personal_dir != s) {
-		getcwd(_paths.personal_dir, MAX_PATH);
-		AppendPathSeparator(_paths.personal_dir, MAX_PATH);
-		ttd_strlcat(_paths.personal_dir, PERSONAL_DIR, MAX_PATH);
-	}
-#endif /* defined(USE_HOMEDIR) */
-
-	AppendPathSeparator(_paths.personal_dir,  MAX_PATH);
-	AppendPathSeparator(_paths.game_data_dir, MAX_PATH);
-}
-
 bool InsertTextBufferClipboard(Textbuf *tb)
 {
 	return false;