diff --git a/src/lib/icu/Compare.cxx b/src/lib/icu/Compare.cxx
index 2f6a79553..6bd4a47a7 100644
--- a/src/lib/icu/Compare.cxx
+++ b/src/lib/icu/Compare.cxx
@@ -49,7 +49,7 @@ IcuCompare::operator==(const char *haystack) const noexcept
 	try {
 		auto w_haystack = MultiByteToWideChar(CP_UTF8, haystack);
 		return CompareStringEx(LOCALE_NAME_INVARIANT,
-				       NORM_IGNORECASE,
+				       LINGUISTIC_IGNORECASE|NORM_IGNORECASE,
 				       w_haystack.c_str(), -1,
 				       needle.c_str(), -1,
 				       nullptr, nullptr, 0) == CSTR_EQUAL;