Index: src/slic3r/GUI/Mouse3DController.cpp
--- src/slic3r/GUI/Mouse3DController.cpp.orig
+++ src/slic3r/GUI/Mouse3DController.cpp
@@ -146,7 +146,11 @@ static std::string detect_attached_device()
     std::string ret;
 
     // Initialize the hidapi library
+#ifdef __OpenBSD__
+    int res = hidapi_hid_init();
+#else
     int res = hid_init();
+#endif
     if (res != 0)
         BOOST_LOG_TRIVIAL(error) << "Unable to initialize hidapi library";
     else {
@@ -698,7 +702,11 @@ void Mouse3DController::shutdown()
 void Mouse3DController::run()
 {
     // Initialize the hidapi library
+#ifdef __OpenBSD__
+    int res = hidapi_hid_init();
+#else
     int res = hid_init();
+#endif
     if (res != 0) {
     	// Give up.
 #if defined(__unix__) || defined(__unix) || defined(unix)