Index: src/OFFileIRIHandler.m
==================================================================
--- src/OFFileIRIHandler.m
+++ src/OFFileIRIHandler.m
@@ -41,10 +41,11 @@
 #endif
 #if defined(OF_FREEBSD) || defined(OF_NETBSD)
 # include <sys/extattr.h>
 #endif
 #ifdef OF_HAIKU
+# include <TypeConstants.h>
 # include <kernel/fs_attr.h>
 #endif
 #ifdef OF_DJGPP
 # include <syslimits.h>
 #endif

Index: tests/OFFileManagerTests.m
==================================================================
--- tests/OFFileManagerTests.m
+++ tests/OFFileManagerTests.m
@@ -21,10 +21,14 @@
 
 #include <errno.h>
 
 #import "ObjFW.h"
 #import "ObjFWTest.h"
+
+#ifdef OF_HAIKU
+# include <TypeConstants.h>
+#endif
 
 @interface OFFileManagerTests: OTTestCase
 {
 	OFFileManager *_fileManager;
 	OFIRI *_testsDirectoryIRI, *_testFileIRI;