diff --git a/.clang-format b/.clang-format
index cac7029f..b48d4e1e 100644
--- a/.clang-format
+++ b/.clang-format
@@ -75,6 +75,7 @@ IncludeCategories:
     Priority:        9
   # Qt includes (match before C++ standard library)
   - Regex:           '<Q([A-Za-z0-9\-_])+>'
+    CaseSensitive:   true
     Priority:        9
   # Headers in <> with an extension. (+system libraries)
   - Regex:           '<([A-Za-z0-9\-_])+\.h>'