diff --git a/AUTHORS b/AUTHORS
index d0e584f63..c10ee5c15 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -261,6 +261,7 @@ Virgil Dupras
 Vitaly Lashmanov
 Vlad Dragos
 Volodymyr Piskun
+Wei Lin
 Wil Cooley
 William Lee
 Wim Glenn
diff --git a/changelog/6189.bugfix.rst b/changelog/6189.bugfix.rst
new file mode 100644
index 000000000..060a2260a
--- /dev/null
+++ b/changelog/6189.bugfix.rst
@@ -0,0 +1 @@
+Fix incorrect result of ``getmodpath`` method.
diff --git a/src/_pytest/python.py b/src/_pytest/python.py
index b8b365ad3..734a92f9b 100644
--- a/src/_pytest/python.py
+++ b/src/_pytest/python.py
@@ -285,8 +285,7 @@ class PyobjMixin(PyobjContext):
                     break
             parts.append(name)
         parts.reverse()
-        s = ".".join(parts)
-        return s.replace(".[", "[")
+        return ".".join(parts)
 
     def reportinfo(self):
         # XXX caching?