diff --git a/tests/misc/cexample_module.py b/tests/misc/cexample_module.py
new file mode 100644
index 000000000..cf1d46f75
--- /dev/null
+++ b/tests/misc/cexample_module.py
@@ -0,0 +1,14 @@
+# test custom builtin module
+
+try:
+    import cexample
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+print(cexample)
+
+d = dir(cexample)
+d.index("add_ints")
+
+print(cexample.add_ints(1, 3))
diff --git a/tests/misc/cexample_module.py.exp b/tests/misc/cexample_module.py.exp
new file mode 100644
index 000000000..81fcc2f2d
--- /dev/null
+++ b/tests/misc/cexample_module.py.exp
@@ -0,0 +1,2 @@
+<module 'cexample'>
+4
diff --git a/tests/unix/extra_coverage.py b/tests/unix/extra_coverage.py
index 00226a68e..a51b5b856 100644
--- a/tests/unix/extra_coverage.py
+++ b/tests/unix/extra_coverage.py
@@ -49,11 +49,6 @@ print(buf.write(bytearray(16)))
 # function defined in C++ code
 print("cpp", extra_cpp_coverage())
 
-# test user C module
-import cexample
-
-print(cexample.add_ints(3, 2))
-
 # test user C module mixed with C++ code
 import cppexample
 
diff --git a/tests/unix/extra_coverage.py.exp b/tests/unix/extra_coverage.py.exp
index 2f5409b85..2f8e37c5f 100644
--- a/tests/unix/extra_coverage.py.exp
+++ b/tests/unix/extra_coverage.py.exp
@@ -179,7 +179,6 @@ OSError
 None
 None
 cpp None
-5
 (3, 'hellocpp')
 frzstr1
 frzstr1.py