diff --git a/source/blender/python/api2_2x/Blender.c b/source/blender/python/api2_2x/Blender.c
index d8385c1d660..420d292cdce 100644
--- a/source/blender/python/api2_2x/Blender.c
+++ b/source/blender/python/api2_2x/Blender.c
@@ -708,7 +708,7 @@ static PyObject *Blender_Save( PyObject * self, PyObject * args )
 					      "expected filename and optional int (overwrite flag) as arguments" );
 
 	for( li = G.main->library.first; li; li = li->id.next ) {
-		if( BLI_streq( li->name, fname ) ) {
+		if( li->parent==NULL && BLI_streq( li->name, fname ) ) {
 			return EXPP_ReturnPyObjError( PyExc_AttributeError,
 						      "cannot overwrite used library" );
 		}
diff --git a/source/blender/src/usiblender.c b/source/blender/src/usiblender.c
index 4aea0df74b9..92e49ab29fa 100644
--- a/source/blender/src/usiblender.c
+++ b/source/blender/src/usiblender.c
@@ -883,7 +883,7 @@ void BIF_write_file(char *target)
 	if (G.f & G_DOSCRIPTLINKS) BPY_do_pyscript(&G.scene->id, SCRIPT_ONSAVE);
 
 	for (li= G.main->library.first; li; li= li->id.next) {
-		if (BLI_streq(li->name, target)) {
+		if (li->parent==NULL && BLI_streq(li->name, target)) {
 			error("Cannot overwrite used library");
 			return;
 		}