diff --git a/source/styles/tests/test_number_format.hpp b/source/styles/tests/test_number_format.hpp
index a42236b5..603a8ebb 100644
--- a/source/styles/tests/test_number_format.hpp
+++ b/source/styles/tests/test_number_format.hpp
@@ -1,4 +1,4 @@
-#pragma once
+#pragma once
 
 #include <iostream>
 #include <cxxtest/TestSuite.h>