diff --git a/src/utils.cpp b/src/utils.cpp
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -174,17 +174,14 @@
 {
     switch (s) {
         case NoError:
-            std::cout << "Debug: " << m << std::endl;
             break;
         case Warning:
-            std::cerr << "Warning: " << m << std::endl;
             if (ThreadLocal::inst().errorBit < Warning) {
                 ThreadLocal::inst().errorBit = Warning;
                 ThreadLocal::inst().errorMessage = m;
             }
             break;
         case Error:
-            std::cerr << "Error: " << m << std::endl;
             if (ThreadLocal::inst().errorBit < Error) {
                 ThreadLocal::inst().errorBit = Error;
                 ThreadLocal::inst().errorMessage = m;
@@ -192,7 +189,6 @@
             break;
         case Critical:
         default:
-            std::cerr << "Critical: " << m << std::endl;
             if (ThreadLocal::inst().errorBit < Critical) {
                 ThreadLocal::inst().errorBit = Critical;
                 ThreadLocal::inst().errorMessage = m;