diff --git a/xs/src/libslic3r/utils.cpp b/xs/src/libslic3r/utils.cpp
index 828ece50f5..50db6f3005 100644
--- a/xs/src/libslic3r/utils.cpp
+++ b/xs/src/libslic3r/utils.cpp
@@ -4,7 +4,7 @@
 
 namespace Slic3r {
 
-static boost::log::trivial::severity_level logSeverity = boost::log::trivial::fatal;
+static boost::log::trivial::severity_level logSeverity = boost::log::trivial::error;
 
 void set_logging_level(unsigned int level)
 {
@@ -29,6 +29,11 @@ void set_logging_level(unsigned int level)
     );
 }
 
+// Force set_logging_level(<=error) after loading of the DLL.
+static struct SetLoggingLevelOnInit {
+    SetLoggingLevelOnInit() { set_logging_level(1); }
+} g_SetLoggingLevelOnInit;
+
 void trace(unsigned int level, const char *message)
 {
     boost::log::trivial::severity_level severity = boost::log::trivial::trace;