diff --git a/StringUtils.h b/StringUtils.h
index c9c2969..bde9d7f 100644
--- a/StringUtils.h
+++ b/StringUtils.h
@@ -25,7 +25,7 @@
 #include <stdexcept>
 
 #define wxT(x) std::string(x)
-#define string_right(s,l) (s.substr(s.length() - 1, l))
+#define string_right(s,l) (s.substr(s.length() - l, l))
 
 template<typename ... Args>
 std::string string_format( const std::string& format, Args ... args );
\ No newline at end of file