diff --git a/Lib/dis.py b/Lib/dis.py
index 10e5f7fb08ab21c..227e0e42c57a688 100644
--- a/Lib/dis.py
+++ b/Lib/dis.py
@@ -318,7 +318,7 @@ def _get_instructions_bytes(code, varnames=None, names=None, constants=None,
     arguments.
 
     """
-    labels = findlabels(code)
+    labels = _findlabels_bytes(code)
     starts_line = None
     for offset, op, arg in _unpack_opargs(code):
         if linestarts is not None:
@@ -432,6 +432,14 @@ def findlabels(code):
 
     Return the list of offsets.
 
+    """
+    return _findlabels_bytes(code.co_code)
+
+def _findlabels_bytes(code):
+    """Detect all offsets in a raw compiled bytecode string which are jump targets.
+
+    Return the list of offsets.
+
     """
     labels = []
     for offset, op, arg in _unpack_opargs(code):
diff --git a/Lib/test/test_dis.py b/Lib/test/test_dis.py
index ac5836d288978ce..7b08c1146b7c733 100644
--- a/Lib/test/test_dis.py
+++ b/Lib/test/test_dis.py
@@ -1202,5 +1202,12 @@ def test_from_traceback_dis(self):
         b = dis.Bytecode.from_traceback(tb)
         self.assertEqual(b.dis(), dis_traceback)
 
+    def test_findlabels(self):
+        self.assertEqual(
+            dis.findlabels(jumpy.__code__), [
+                44, 30, 8, 52, 94, 82, 102, 200, 118, 144, 142, 188, 172, 178, 210
+            ])
+
+
 if __name__ == "__main__":
     unittest.main()