diff --git a/CHANGELOG b/CHANGELOG
index 8fad642..6144fd1 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -6,6 +6,9 @@
 - fix duplicate reported test ids with --looponfailing
   (thanks Jeremy Thurgood)
 
+- fix pytest issue41: re-run tests on all file changes, not just
+  randomly select ones like .py/.c.
+
 1.8
 -------------------------
 
diff --git a/testing/acceptance_test.py b/testing/acceptance_test.py
index 34596ee..69f83f4 100644
--- a/testing/acceptance_test.py
+++ b/testing/acceptance_test.py
@@ -33,7 +33,7 @@ class TestDistribution:
         result = testdir.runpytest(p1, "-n1")
         assert result.ret == 1
         result.stdout.fnmatch_lines([
-            "E   ImportError: No module named __import_of_missing_module",
+            "E   ImportError: *__import_of_missing_module*",
         ])
 
     def test_n2_import_error(self, testdir):
@@ -69,7 +69,7 @@ class TestDistribution:
         result = testdir.runpytest(p1, '--tx=popen', '--tx=popen')
         assert result.ret == 1
         result.stdout.fnmatch_lines([
-            "E   ImportError: No module named __import_of_missing_module",
+            "E   ImportError: *__import_of_missing_module*",
         ])
 
     def test_manytests_to_one_popen(self, testdir):
diff --git a/testing/test_looponfail.py b/testing/test_looponfail.py
index 1c86772..fe5f9fd 100644
--- a/testing/test_looponfail.py
+++ b/testing/test_looponfail.py
@@ -64,11 +64,11 @@ class TestStatRecorder:
         pycfile = hello + "c"
         pycfile.ensure()
         changed = sd.check()
-        assert not changed
+        assert changed
 
         hello.write("world")
         changed = sd.check()
-        assert not pycfile.check()
+        assert changed
 
     def test_waitonchange(self, tmpdir, monkeypatch):
         tmp = tmpdir
diff --git a/xdist/looponfail.py b/xdist/looponfail.py
index 8987040..1a8d9f2 100644
--- a/xdist/looponfail.py
+++ b/xdist/looponfail.py
@@ -188,7 +188,7 @@ class StatRecorder:
         self.check() # snapshot state
 
     def fil(self, p):
-        return p.ext in ('.py', '.txt', '.c', '.h')
+        return True  # we are sensitive to all file changes since 1.9
     def rec(self, p):
         return p.check(dotfile=0)