Index: libobjfw.xcodeproj/project.pbxproj
==================================================================
--- libobjfw.xcodeproj/project.pbxproj
+++ libobjfw.xcodeproj/project.pbxproj
@@ -130,12 +130,10 @@
 		4B6799881099E7C50041064A /* OFXMLElement.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = OFXMLElement.m; path = src/OFXMLElement.m; sourceTree = SOURCE_ROOT; };
 		4B6799891099E7C50041064A /* OFXMLParser.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = OFXMLParser.h; path = src/OFXMLParser.h; sourceTree = SOURCE_ROOT; };
 		4B67998A1099E7C50041064A /* OFXMLParser.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = OFXMLParser.m; path = src/OFXMLParser.m; sourceTree = SOURCE_ROOT; };
 		4B67998B1099E7C50041064A /* threading.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = threading.h; path = src/threading.h; sourceTree = SOURCE_ROOT; };
 		4B67998C1099E7C50041064A /* unicode.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = unicode.h; path = src/unicode.h; sourceTree = SOURCE_ROOT; };
-		4B67998D1099E7C50041064A /* unicode_lower.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = unicode_lower.m; path = src/unicode_lower.m; sourceTree = SOURCE_ROOT; };
-		4B67998E1099E7C50041064A /* unicode_upper.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = unicode_upper.m; path = src/unicode_upper.m; sourceTree = SOURCE_ROOT; };
 		4B67998F1099E7C50041064A /* windows_1252.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; name = windows_1252.c; path = src/windows_1252.c; sourceTree = SOURCE_ROOT; };
 		4B6799911099E82D0041064A /* array.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = array.m; path = tests/array.m; sourceTree = SOURCE_ROOT; };
 		4B6799921099E82D0041064A /* dataarray.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = dataarray.m; path = tests/dataarray.m; sourceTree = SOURCE_ROOT; };
 		4B6799931099E82D0041064A /* dictionary.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = dictionary.m; path = tests/dictionary.m; sourceTree = SOURCE_ROOT; };
 		4B6799941099E82D0041064A /* hashes.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = hashes.m; path = tests/hashes.m; sourceTree = SOURCE_ROOT; };
@@ -149,10 +147,11 @@
 		4B67999C1099E82D0041064A /* thread.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = thread.m; path = tests/thread.m; sourceTree = SOURCE_ROOT; };
 		4B67999D1099E82D0041064A /* xmlelement.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = xmlelement.m; path = tests/xmlelement.m; sourceTree = SOURCE_ROOT; };
 		4B67999E1099E82D0041064A /* xmlparser.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = xmlparser.m; path = tests/xmlparser.m; sourceTree = SOURCE_ROOT; };
 		4B6799A01099E85D0041064A /* TestPlugin.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = TestPlugin.h; path = tests/plugin/TestPlugin.h; sourceTree = SOURCE_ROOT; };
 		4B6799A11099E85D0041064A /* TestPlugin.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = TestPlugin.m; path = tests/plugin/TestPlugin.m; sourceTree = SOURCE_ROOT; };
+		4BFBDD1610A0724800051AFB /* unicode.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = unicode.m; path = src/unicode.m; sourceTree = SOURCE_ROOT; };
 /* End PBXFileReference section */
 
 /* Begin PBXGroup section */
 		08FB7794FE84155DC02AAC07 /* libobjfw */ = {
 			isa = PBXGroup;
@@ -220,12 +219,11 @@
 				4B6799571099E7C50041064A /* iso_8859_15.c */,
 				4B6799581099E7C50041064A /* objc_sync.m */,
 				4B6799591099E7C50041064A /* objfw.h */,
 				4B67998B1099E7C50041064A /* threading.h */,
 				4B67998C1099E7C50041064A /* unicode.h */,
-				4B67998D1099E7C50041064A /* unicode_lower.m */,
-				4B67998E1099E7C50041064A /* unicode_upper.m */,
+				4BFBDD1610A0724800051AFB /* unicode.m */,
 				4B67998F1099E7C50041064A /* windows_1252.c */,
 			);
 			name = libobjfw;
 			sourceTree = "<group>";
 		};