diff --git a/.arcconfig b/.arcconfig
new file mode 100644
--- /dev/null
+++ b/.arcconfig
@@ -0,0 +1,3 @@
+{
+    "phabricator.uri": "https://git.kolab.org"
+}
diff --git a/src/utils.cpp b/src/utils.cpp
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -174,17 +174,23 @@
 {
     switch (s) {
         case NoError:
+#ifndef NDEBUG
             std::cout << "Debug: " << m << std::endl;
+#endif
             break;
         case Warning:
+#ifndef NDEBUG
             std::cerr << "Warning: " << m << std::endl;
+#endif
             if (ThreadLocal::inst().errorBit < Warning) {
                 ThreadLocal::inst().errorBit = Warning;
                 ThreadLocal::inst().errorMessage = m;
             }
             break;
         case Error:
+#ifndef NDEBUG
             std::cerr << "Error: " << m << std::endl;
+#endif
             if (ThreadLocal::inst().errorBit < Error) {
                 ThreadLocal::inst().errorBit = Error;
                 ThreadLocal::inst().errorMessage = m;
@@ -192,7 +198,9 @@
             break;
         case Critical:
         default:
+#ifndef NDEBUG
             std::cerr << "Critical: " << m << std::endl;
+#endif
             if (ThreadLocal::inst().errorBit < Critical) {
                 ThreadLocal::inst().errorBit = Critical;
                 ThreadLocal::inst().errorMessage = m;