diff --git a/src/osuparser.cpp b/src/osuparser.cpp
index bb5cd52..29a94fc 100644
--- a/src/osuparser.cpp
+++ b/src/osuparser.cpp
@@ -54,7 +54,7 @@ inline std::string checkAndRemove(const std::string &str, const std::string &pre
             \
             if (line.starts_with('[') && line.ends_with(']')) {\
                 currentSection = line.substr(1, line.length() - 2);\
-                toLower(currentSection);\
+                currentSection[0] = std::tolower(currentSection[0]);\
                 continue;\
             }\
             \