diff --git a/aQute.libg/src/aQute/lib/io/Windows.java b/aQute.libg/src/aQute/lib/io/Windows.java
index 30bc7a900d..c74c480f7f 100644
--- a/aQute.libg/src/aQute/lib/io/Windows.java
+++ b/aQute.libg/src/aQute/lib/io/Windows.java
@@ -10,7 +10,7 @@
 
 class Windows implements OS {
 	final static Pattern WINDOWS_BAD_FILE_NAME_P = Pattern.compile(
-		"(?:(:?.*[\u0000-\u001F<>:\"|/\\\\?*].*)|..|CON|PRN|AUX|NUL|COM\\d|COM¹|COM²|COM³|LPT\\d|LPT¹|LPT²|LPT³)(?:\\.\\w+)?",
+		"(?:(:?.*[\u0000-\u001F<>:\"|/\\\\?*].*)|\\.\\.|CON|PRN|AUX|NUL|COM\\d|COM¹|COM²|COM³|LPT\\d|LPT¹|LPT²|LPT³)(?:\\.\\w+)?",
 		Pattern.CASE_INSENSITIVE);
 
 	@Override
diff --git a/aQute.libg/test/aQute/lib/io/IOTest.java b/aQute.libg/test/aQute/lib/io/IOTest.java
index 5e56fde7c4..b6a5cae9af 100644
--- a/aQute.libg/test/aQute/lib/io/IOTest.java
+++ b/aQute.libg/test/aQute/lib/io/IOTest.java
@@ -561,6 +561,8 @@ public void testGetBasedFile() throws IOException {
 		assertThat(new File(base, "")).isEqualTo(base);
 		assertThat(new File(base, "./").getParentFile()).isEqualTo(base);
 		assertThat(new File(base, "/bar").getParentFile()).isEqualTo(base);
+		assertThat(IO.getBasedFile(base, "META-INF/versions/11/OSGI-INF/MANIFEST.MF")
+			.getName()).isEqualTo("MANIFEST.MF");
 		assertThat(IO.getBasedFile(base, "")).isEqualTo(base);
 		assertThat(IO.getBasedFile(base, "foo/../bar")).isEqualTo(new File(base, "bar"));
 		assertThat(IO.getBasedFile(base, ".💩.")).isEqualTo(new File(base, ".💩."));
@@ -578,6 +580,8 @@ public void testCoder() {
 	public void testWindows() throws IOException {
 		Windows os = new Windows();
 		File base = new File("base").getAbsoluteFile();
+		assertThat(os.getBasedFile(base, "META-INF/versions/11/OSGI-INF/MANIFEST.MF")
+			.getName()).isEqualTo("MANIFEST.MF");
 		assertThat(except(() -> os.getBasedFile(base, "bar/LPT1"))).contains("io.win.sub.invalid");
 		assertThat(except(() -> os.getBasedFile(base, "bar/<bla"))).contains("io.win.sub.invalid");
 		assertThat(except(() -> os.getBasedFile(base, "bar/>bla/foo"))).contains("io.win.sub.invalid");