diff --git a/include/Errors.hpp b/include/Errors.hpp
index 42d67a9..7ba07f0 100644
--- a/include/Errors.hpp
+++ b/include/Errors.hpp
@@ -87,10 +87,9 @@ protected:
         std::string filename=""
     ) noexcept : ErrorBase(code, msg, line, filename) {
         std::string what_msg(trace.what());
-        std::string::size_type newline_pos = what_msg.find("\n");
-        while(newline_pos != std::string::npos) {
+        std::string::size_type newline_pos=-1;
+        while((newline_pos=what_msg.find("\n", newline_pos+1))!= std::string::npos) {
             what_msg.replace(newline_pos, 1, "\n  ");
-            newline_pos = what_msg.find("\n", newline_pos+1);
         }
         _msg += "\n    Trace:  " + what_msg;
     }