diff --git a/src/string.cpp b/src/string.cpp
index 4c714a2e02..fc27d8b5ed 100644
--- a/src/string.cpp
+++ b/src/string.cpp
@@ -595,7 +595,7 @@ int strnatcmp(const char *s1, const char *s2, bool ignore_garbage_at_front)
 #endif
 
 	/* Do a normal comparison if ICU is missing or if we cannot create a collator. */
-	return strcasecmp(s1, s2);
+	return strcoll(s1, s2);
 }
 
 #ifdef WITH_UNISCRIBE