diff --git a/tests/reference/proj/2_nwProject.nwx b/tests/reference/proj/2_nwProject.nwx
index b78c14a4..0a8e6b4d 100644
--- a/tests/reference/proj/2_nwProject.nwx
+++ b/tests/reference/proj/2_nwProject.nwx
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8'?>
-<novelWriterXML appVersion="0.1.4" fileVersion="1.0" timeStamp="2019-06-08 20:53:03">
+<novelWriterXML appVersion="0.4.5" fileVersion="1.0" timeStamp="2020-02-26 22:05:41">
   <project>
     <name></name>
     <title></title>
@@ -72,28 +72,28 @@
       <paraCount>0</paraCount>
       <cursorPos>0</cursorPos>
     </item>
-    <item handle="39fa9ec190eee" order="None" parent="None">
+    <item handle="8722616204217" order="None" parent="None">
       <name>Timeline</name>
       <type>ROOT</type>
       <class>TIMELINE</class>
       <status>New</status>
       <expanded>False</expanded>
     </item>
-    <item handle="d029fa3a95e17" order="None" parent="None">
+    <item handle="96061e92f58e4" order="None" parent="None">
       <name>Object</name>
       <type>ROOT</type>
       <class>OBJECT</class>
       <status>New</status>
       <expanded>False</expanded>
     </item>
-    <item handle="81b8a03f97e87" order="None" parent="None">
+    <item handle="eb624dbe56eb6" order="None" parent="None">
       <name>Custom1</name>
       <type>ROOT</type>
       <class>CUSTOM</class>
       <status>New</status>
       <expanded>False</expanded>
     </item>
-    <item handle="da4ea2a5506f2" order="None" parent="None">
+    <item handle="f369cb89fc627" order="None" parent="None">
       <name>Custom2</name>
       <type>ROOT</type>
       <class>CUSTOM</class>
diff --git a/tests/test_project.py b/tests/test_project.py
index c2f4078d..6723dcc7 100644
--- a/tests/test_project.py
+++ b/tests/test_project.py
@@ -29,6 +29,7 @@ def testProjectNew(nwTempProj,nwRef,nwTemp):
     assert theProject.newProject()
     assert theProject.setProjectPath(nwTempProj)
     assert theProject.saveProject()
+    assert theProject.closeProject()
     assert cmpFiles(projFile, refFile, [2])
 
 @pytest.mark.project
@@ -41,9 +42,21 @@ def testProjectSave(nwTempProj,nwRef):
     projFile = path.join(nwTempProj,"nwProject.nwx")
     refFile  = path.join(nwRef,"proj","1_nwProject.nwx")
     assert theProject.saveProject()
+    assert theProject.closeProject()
     assert cmpFiles(projFile, refFile, [2])
     assert not theProject.projChanged
 
+@pytest.mark.project
+def testProjectOpenTwice(nwTempProj,nwRef):
+    projFile = path.join(nwTempProj,"nwProject.nwx")
+    refFile  = path.join(nwRef,"proj","1_nwProject.nwx")
+    assert theProject.openProject(projFile)
+    assert not theProject.openProject(projFile)
+    assert theProject.openProject(projFile, overrideLock=True)
+    assert theProject.saveProject()
+    assert theProject.closeProject()
+    assert cmpFiles(projFile, refFile, [2])
+
 @pytest.mark.project
 def testProjectNewRoot(nwTempProj,nwRef):
     projFile = path.join(nwTempProj,"nwProject.nwx")
@@ -59,6 +72,7 @@ def testProjectNewRoot(nwTempProj,nwRef):
     assert isinstance(theProject.newRoot("Custom2",   nwItemClass.CUSTOM),    str)
     assert theProject.projChanged
     assert theProject.saveProject()
+    assert theProject.closeProject()
     assert cmpFiles(projFile, refFile, [2])
     assert not theProject.projChanged
 
@@ -96,6 +110,8 @@ def testIndexScanThis(nwTempProj):
     assert str(theBits) == "['@tag', 'this', 'and this']"
     assert str(thePos)  == "[0, 6, 12]"
 
+    assert theProject.closeProject()
+
 @pytest.mark.project
 def testBuildIndex(nwTempProj):
     projFile = path.join(nwTempProj,"nwProject.nwx")
@@ -117,3 +133,4 @@ def testBuildIndex(nwTempProj):
     assert theIndex.buildNovelList()
     assert str(theIndex.novelList)  == "[[1, 1, 'Novel', 'SCENE'], [3, 2, 'Chapter', 'SCENE'], [5, 3, 'Scene', 'SCENE'], [7, 4, 'Section', 'SCENE']]"
     assert str(theIndex.novelOrder) == "['31489056e0916:1', '31489056e0916:3', '31489056e0916:5', '31489056e0916:7']"
+    assert theProject.closeProject()