diff --git a/Doxyfile b/Doxyfile
index 93d1e968f6..b6b46257a7 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -297,7 +297,7 @@ PREDEFINED             = ENABLE_NETWORK \
                          WITH_PNG \
                          WITH_FONTCONFIG \
                          WITH_FREETYPE \
-                         WITH_ICU_SORT \
+                         WITH_ICU_I18N \
                          WITH_ICU_LX \
                          UNICODE \
                          _UNICODE \
diff --git a/config.lib b/config.lib
index 5eb32477f4..bab1ca4ea4 100644
--- a/config.lib
+++ b/config.lib
@@ -1776,7 +1776,7 @@ make_cflags_and_ldflags() {
 	fi
 
 	if [ -n "$icu_sort_config" ]; then
-		CFLAGS="$CFLAGS -DWITH_ICU_SORT"
+		CFLAGS="$CFLAGS -DWITH_ICU_I18N"
 		CFLAGS="$CFLAGS `$icu_sort_config --cflags | tr '\n\r' '  '`"
 
 		if [ "$static_icu" != "0" ]; then
diff --git a/src/crashlog.cpp b/src/crashlog.cpp
index bf522d96c7..ddb0c09cc6 100644
--- a/src/crashlog.cpp
+++ b/src/crashlog.cpp
@@ -52,9 +52,9 @@
 #	include <ft2build.h>
 #	include FT_FREETYPE_H
 #endif /* WITH_FREETYPE */
-#if defined(WITH_ICU_LX) || defined(WITH_ICU_SORT)
+#if defined(WITH_ICU_LX) || defined(WITH_ICU_I18N)
 #	include <unicode/uversion.h>
-#endif /* WITH_ICU_LX || WITH_ICU_SORT */
+#endif /* WITH_ICU_LX || WITH_ICU_I18N */
 #ifdef WITH_LIBLZMA
 #	include <lzma.h>
 #endif
@@ -240,19 +240,19 @@ char *CrashLog::LogLibraries(char *buffer, const char *last) const
 	buffer += seprintf(buffer, last, " FreeType:   %d.%d.%d\n", major, minor, patch);
 #endif /* WITH_FREETYPE */
 
-#if defined(WITH_ICU_LX) || defined(WITH_ICU_SORT)
+#if defined(WITH_ICU_LX) || defined(WITH_ICU_I18N)
 	/* 4 times 0-255, separated by dots (.) and a trailing '\0' */
 	char buf[4 * 3 + 3 + 1];
 	UVersionInfo ver;
 	u_getVersion(ver);
 	u_versionToString(ver, buf);
-#ifdef WITH_ICU_SORT
+#ifdef WITH_ICU_I18N
 	buffer += seprintf(buffer, last, " ICU i18n:   %s\n", buf);
 #endif
 #ifdef WITH_ICU_LX
 	buffer += seprintf(buffer, last, " ICU lx:     %s\n", buf);
 #endif
-#endif /* WITH_ICU_LX || WITH_ICU_SORT */
+#endif /* WITH_ICU_LX || WITH_ICU_I18N */
 
 #ifdef WITH_LIBLZMA
 	buffer += seprintf(buffer, last, " LZMA:       %s\n", lzma_version_string());
diff --git a/src/language.h b/src/language.h
index ec241dbd8c..8df59f74ff 100644
--- a/src/language.h
+++ b/src/language.h
@@ -13,9 +13,9 @@
 #define LANGUAGE_H
 
 #include "core/smallvec_type.hpp"
-#ifdef WITH_ICU_SORT
+#ifdef WITH_ICU_I18N
 #include <unicode/coll.h>
-#endif /* WITH_ICU_SORT */
+#endif /* WITH_ICU_I18N */
 #include "strings_type.h"
 
 static const uint8 CASE_GENDER_LEN = 16; ///< The (maximum) length of a case/gender string.
@@ -104,9 +104,9 @@ extern LanguageList _languages;
 /** The currently loaded language. */
 extern const LanguageMetadata *_current_language;
 
-#ifdef WITH_ICU_SORT
+#ifdef WITH_ICU_I18N
 extern icu::Collator *_current_collator;
-#endif /* WITH_ICU_SORT */
+#endif /* WITH_ICU_I18N */
 
 bool ReadLanguagePack(const LanguageMetadata *lang);
 const LanguageMetadata *GetLanguage(byte newgrflangid);
diff --git a/src/string.cpp b/src/string.cpp
index ae1b556aff..18ed863d0e 100644
--- a/src/string.cpp
+++ b/src/string.cpp
@@ -37,12 +37,12 @@
 #include "os/macosx/string_osx.h"
 #endif
 
-#ifdef WITH_ICU_SORT
+#ifdef WITH_ICU_I18N
 /* Required by strnatcmp. */
 #include <unicode/ustring.h>
 #include "language.h"
 #include "gfx_func.h"
-#endif /* WITH_ICU_SORT */
+#endif /* WITH_ICU_I18N */
 
 /* The function vsnprintf is used internally to perform the required formatting
  * tasks. As such this one must be allowed, and makes sure it's terminated. */
@@ -584,13 +584,13 @@ int strnatcmp(const char *s1, const char *s2, bool ignore_garbage_at_front)
 		s2 = SkipGarbage(s2);
 	}
 
-#ifdef WITH_ICU_SORT
+#ifdef WITH_ICU_I18N
 	if (_current_collator != NULL) {
 		UErrorCode status = U_ZERO_ERROR;
 		int result = _current_collator->compareUTF8(s1, s2, status);
 		if (U_SUCCESS(status)) return result;
 	}
-#endif /* WITH_ICU_SORT */
+#endif /* WITH_ICU_I18N */
 
 #if defined(_WIN32) && !defined(STRGEN) && !defined(SETTINGSGEN)
 	int res = OTTDStringCompare(s1, s2);
@@ -613,7 +613,7 @@ int strnatcmp(const char *s1, const char *s2, bool ignore_garbage_at_front)
 	return new UniscribeStringIterator();
 }
 
-#elif defined(WITH_ICU_SORT)
+#elif defined(WITH_ICU_I18N)
 
 #include <unicode/utext.h>
 #include <unicode/brkiter.h>
diff --git a/src/strings.cpp b/src/strings.cpp
index 849a540f2c..b5fb36d4d9 100644
--- a/src/strings.cpp
+++ b/src/strings.cpp
@@ -51,9 +51,9 @@ const LanguageMetadata *_current_language = NULL; ///< The currently loaded lang
 
 TextDirection _current_text_dir; ///< Text direction of the currently selected language.
 
-#ifdef WITH_ICU_SORT
+#ifdef WITH_ICU_I18N
 icu::Collator *_current_collator = NULL;          ///< Collator for the language currently in use.
-#endif /* WITH_ICU_SORT */
+#endif /* WITH_ICU_I18N */
 
 static uint64 _global_string_params_data[20];     ///< Global array of string parameters. To access, use #SetDParam.
 static WChar _global_string_params_type[20];      ///< Type of parameters stored in #_global_string_params
@@ -1796,7 +1796,7 @@ bool ReadLanguagePack(const LanguageMetadata *lang)
 	MacOSSetCurrentLocaleName(_current_language->isocode);
 #endif
 
-#ifdef WITH_ICU_SORT
+#ifdef WITH_ICU_I18N
 	/* Delete previous collator. */
 	if (_current_collator != NULL) {
 		delete _current_collator;
@@ -1813,7 +1813,7 @@ bool ReadLanguagePack(const LanguageMetadata *lang)
 		delete _current_collator;
 		_current_collator = NULL;
 	}
-#endif /* WITH_ICU_SORT */
+#endif /* WITH_ICU_I18N */
 
 	/* Some lists need to be sorted again after a language change. */
 	ReconsiderGameScriptLanguage();