diff --git a/src/strings.cpp b/src/strings.cpp
--- a/src/strings.cpp
+++ b/src/strings.cpp
@@ -2252,7 +2252,7 @@ void CheckForMissingGlyphs(bool base_fon
 	/* Update the font with cache */
 	LoadStringWidthTable(searcher->Monospace());
 
-#if !defined(WITH_ICU_LX) && !defined(WITH_UNISCRIBE) && !defined(WITH_COCOA)
+#if !(defined(WITH_ICU_I18N) && defined(WITH_HARFBUZZ)) && !defined(WITH_UNISCRIBE) && !defined(WITH_COCOA)
 	/*
 	 * For right-to-left languages we need the ICU library. If
 	 * we do not have support for that library we warn the user
@@ -2267,10 +2267,10 @@ void CheckForMissingGlyphs(bool base_fon
 	 * the colour marker.
 	 */
 	if (_current_text_dir != TD_LTR) {
-		static std::string err_str("XXXThis version of OpenTTD does not support right-to-left languages. Recompile with icu enabled.");
+		static std::string err_str("XXXThis version of OpenTTD does not support right-to-left languages. Recompile with ICU + Harfbuzz enabled.");
 		Utf8Encode(err_str.data(), SCC_YELLOW);
 		SetDParamStr(0, err_str);
 		ShowErrorMessage(STR_JUST_RAW_STRING, INVALID_STRING_ID, WL_ERROR);
 	}
-#endif /* !WITH_ICU_LX */
+#endif /* !(WITH_ICU_I18N && WITH_HARFBUZZ) && !WITH_UNISCRIBE && !WITH_COCOA */
 }