diff --git a/lib/Slic3r/GUI/Plater.pm b/lib/Slic3r/GUI/Plater.pm
index 0cdd5d04b9..c0e300120e 100644
--- a/lib/Slic3r/GUI/Plater.pm
+++ b/lib/Slic3r/GUI/Plater.pm
@@ -1052,8 +1052,8 @@ sub OnDropFiles {
     # https://rt.perl.org/rt3/Public/Bug/Display.html?id=70602
     @_ = ();
     
-    # only accept STL and AMF files
-    return 0 if grep !/\.(?:stl|amf(?:\.xml)?)$/i, @$filenames;
+    # only accept STL, OBJ and AMF files
+    return 0 if grep !/\.(?:stl|obj|amf(?:\.xml)?)$/i, @$filenames;
     
     $self->{window}->load_file($_) for @$filenames;
 }