diff --git a/src/libslic3r/Format/3mf.cpp b/src/libslic3r/Format/3mf.cpp
index 2a76f218f..ed2d5d9c3 100644
--- a/src/libslic3r/Format/3mf.cpp
+++ b/src/libslic3r/Format/3mf.cpp
@@ -595,7 +595,7 @@ namespace Slic3r {
 
         mz_zip_archive_file_stat stat;
 
-        m_name = boost::filesystem::path(filename).filename().stem().string();
+        m_name = boost::filesystem::path(filename).stem().string();
 
         // we first loop the entries to read from the archive the .model file only, in order to extract the version from it
         for (mz_uint i = 0; i < num_entries; ++i) {
@@ -1408,6 +1408,13 @@ namespace Slic3r {
                 m_model->delete_object(model_object);
         }
 
+        if (m_version == 0) {
+            // if the 3mf was not produced by PrusaSlicer and there is only one object,
+            // set the object name to match the filename
+            if (m_model->objects.size() == 1)
+                m_model->objects.front()->name = m_name;
+        }
+
         // applies instances' matrices
         for (Instance& instance : m_instances) {
             if (instance.instance != nullptr && instance.instance->get_object() != nullptr)