diff --git a/cibuildwheel/logger.py b/cibuildwheel/logger.py
index 0f7df826..dad70309 100644
--- a/cibuildwheel/logger.py
+++ b/cibuildwheel/logger.py
@@ -242,7 +242,7 @@ class Logger:
             github_summary = self._github_step_summary(duration=duration, options=options)
             Path(summary_path).write_text(filter_ansi_codes(github_summary), encoding="utf-8")
 
-        n_wheels = len([info for info in self.summary if not info.filename])
+        n_wheels = len([info for info in self.summary if info.filename])
         s = "s" if n_wheels > 1 else ""
         duration_str = humanize.naturaldelta(duration)
         print()
diff --git a/unit_test/wheel_print_test.py b/unit_test/wheel_print_test.py
index a7989f66..b7e6953f 100644
--- a/unit_test/wheel_print_test.py
+++ b/unit_test/wheel_print_test.py
@@ -15,9 +15,11 @@ def test_printout_wheels(capsys):
     log.colors_enabled = False
 
     with log.print_summary(options=OPTIONS_DEFAULTS):
+        # the number of BuildInfo with & without filename shall be different for this test
         log.summary = [
             BuildInfo(identifier="id1", filename=None, duration=3),
             BuildInfo(identifier="id2", filename=FILE, duration=2),
+            BuildInfo(identifier="id3", filename=FILE, duration=3),
         ]
 
     captured = capsys.readouterr()
@@ -25,7 +27,8 @@ def test_printout_wheels(capsys):
 
     assert "id1" in captured.out
     assert "id2" in captured.out
-    assert "1 wheel produced in" in captured.out
+    assert "id3" in captured.out
+    assert "2 wheels produced in" in captured.out
     assert "SHA256=" in captured.out