diff --git a/test/ambiguousFile.expected b/test/ambiguousFile.expected
new file mode 100644
index 0000000..1cd4e89
--- /dev/null
+++ b/test/ambiguousFile.expected
@@ -0,0 +1,4 @@
+
+--- Signs ---
+Signs for fixture.txt:
+    line=5  id=3000  name=GitGutterLineModified
diff --git a/test/testEditAmbiguousFile.vim b/test/testEditAmbiguousFile.vim
new file mode 100644
index 0000000..693ecf7
--- /dev/null
+++ b/test/testEditAmbiguousFile.vim
@@ -0,0 +1,9 @@
+source helper.vim
+call Setup()
+
+normal 5Gi*
+call system('git checkout -b fixture.txt')
+write
+call DumpSigns('ambiguousFile')
+
+call system('git checkout - && git branch -d fixture.txt')