diff --git a/ScStwLibraries/headers/ScStw.hpp b/ScStwLibraries/headers/ScStw.hpp
index d977370..e88eee1 100644
--- a/ScStwLibraries/headers/ScStw.hpp
+++ b/ScStwLibraries/headers/ScStw.hpp
@@ -186,7 +186,7 @@ public:
      *
      * \see ScStwExtensionType
      */
-    static QString extensionTypeToStrin(ExtensionType t);
+    static QString extensionTypeToString(ExtensionType t);
 
     /*!
      * \brief Function to compare to string firmware versions in <major>.<minor>.<patch> formar