diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index 030bb0efcc..80e68abb33 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -508,6 +508,7 @@ contributors:
 
 * Maksym Humetskyi (mhumetskyi): contributor
   - Fixed ignored empty functions by similarities checker with "ignore-signatures" option enabled
+  - Ignore function decorators signatures as well by similarities checker with "ignore-signatures" option enabled
 
 * Daniel Dorani (doranid): contributor
 
diff --git a/ChangeLog b/ChangeLog
index 5a54a9a293..8d60b386b9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -126,6 +126,10 @@ Release date: TBA
 
   * Emit ``consider-using-tuple`` even if list contains a ``starred`` expression.
 
+* Ignore decorators lines by similarities checker when ignore signatures flag enabled
+
+  Closes #4839
+
 
 What's New in Pylint 2.9.6?
 ===========================
diff --git a/pylint/checkers/similar.py b/pylint/checkers/similar.py
index 5bf55ee78f..762ae35b20 100644
--- a/pylint/checkers/similar.py
+++ b/pylint/checkers/similar.py
@@ -595,7 +595,7 @@ def stripped_lines(
             chain(
                 *(
                     range(
-                        func.fromlineno,
+                        func.lineno,
                         func.body[0].lineno if func.body else func.tolineno + 1,
                     )
                     for func in functions
diff --git a/tests/checkers/unittest_similar.py b/tests/checkers/unittest_similar.py
index db59b00c5d..ff3d92ddc9 100644
--- a/tests/checkers/unittest_similar.py
+++ b/tests/checkers/unittest_similar.py
@@ -171,7 +171,7 @@ def test_ignore_signatures_fail():
         == (
             '''
 9 similar lines in 2 files
-==%s:[1:11]
+==%s:[7:17]
 ==%s:[8:18]
        arg1: int = 3,
        arg2: Class1 = val1,
@@ -183,9 +183,19 @@ def test_ignore_signatures_fail():
 
    def example():
        """Valid function definition with docstring only."""
-TOTAL lines=29 duplicates=9 percent=31.03
+
+6 similar lines in 2 files
+==%s:[0:6]
+==%s:[1:7]
+   @deco1(dval1)
+   @deco2(dval2)
+   @deco3(
+       dval3,
+       dval4
+   )
+TOTAL lines=35 duplicates=15 percent=42.86
 '''
-            % (SIMILAR5, SIMILAR6)
+            % (SIMILAR5, SIMILAR6, SIMILAR5, SIMILAR6)
         ).strip()
     )
 
@@ -198,7 +208,7 @@ def test_ignore_signatures_pass():
     assert (
         output.getvalue().strip()
         == """
-TOTAL lines=29 duplicates=0 percent=0.00
+TOTAL lines=35 duplicates=0 percent=0.00
 """.strip()
     )
 
diff --git a/tests/input/similar5 b/tests/input/similar5
index b6e6b1d0ed..0c8bbc2b10 100644
--- a/tests/input/similar5
+++ b/tests/input/similar5
@@ -1,3 +1,9 @@
+@deco1(dval1)
+@deco2(dval2)
+@deco3(
+    dval3,
+    dval4
+)
 def func1(
     arg1: int = 3,
     arg2: Class1 = val1,