diff --git a/mypy/messages.py b/mypy/messages.py
index c6378c264757..fb7eecb273ae 100644
--- a/mypy/messages.py
+++ b/mypy/messages.py
@@ -3015,7 +3015,14 @@ def [T <: int] f(self, x: int, y: T) -> None
             if s:
                 s = ", " + s
             s = first_arg + s
-        s = f"{tp.name.split()[0]}({s})"  # skip "of Class" part
+        if (
+            isinstance(definition, FuncDef)
+            and hasattr(definition, "name")
+            and definition.name == "__init__"
+        ):
+            s = f"{definition.name}({s})"
+        else:
+            s = f"{tp.name.split()[0]}({s})"  # skip "of Class" part
     else:
         s = f"({s})"
 
diff --git a/mypy/test/config.py b/mypy/test/config.py
index 2dc4208b1e9d..7dd5e3806e6e 100644
--- a/mypy/test/config.py
+++ b/mypy/test/config.py
@@ -6,7 +6,7 @@
 if provided_prefix:
     PREFIX = provided_prefix
 else:
-    this_file_dir = os.path.dirname(os.path.realpath(__file__))
+    this_file_dir = os.path.dirname(os.path.abspath(__file__))
     PREFIX = os.path.dirname(os.path.dirname(this_file_dir))
 
 # Location of test data files such as test case descriptions.
diff --git a/test-data/unit/check-serialize.test b/test-data/unit/check-serialize.test
index 1498c8d82826..9c321f0d3ba4 100644
--- a/test-data/unit/check-serialize.test
+++ b/test-data/unit/check-serialize.test
@@ -312,8 +312,8 @@ class A:
 [out2]
 tmp/a.py:2: error: No overload variant of "A" matches argument type "object"
 tmp/a.py:2: note: Possible overload variants:
-tmp/a.py:2: note:     def A(self, x: int) -> A
-tmp/a.py:2: note:     def A(self, x: str) -> A
+tmp/a.py:2: note:     def __init__(self, x: int) -> A
+tmp/a.py:2: note:     def __init__(self, x: str) -> A
 tmp/a.py:7: error: No overload variant of "__init__" of "A" matches argument type "object"
 tmp/a.py:7: note: Possible overload variants:
 tmp/a.py:7: note:     def __init__(self, x: int) -> None