diff --git a/examples/f03/Makefile.am b/examples/f03/Makefile.am
index 7003f4f420c..9a8781d20ad 100644
--- a/examples/f03/Makefile.am
+++ b/examples/f03/Makefile.am
@@ -25,4 +25,4 @@ endif # RUN_TESTS
 EXTRA_DIST = CMakeLists.txt run_tests.sh
 
 # Clean up files produced during testing.
-CLEANFILES = *.nc *.log
+CLEANFILES = *.nc *.log *.mod