diff --git a/Makefile.am b/Makefile.am
index ac3a8f4d..0cb80045 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -131,9 +131,9 @@ noinst_PROGRAMS=
 EXTRA_PROGRAMS=
 CLEANFILES=
 BUILT_SOURCES =
-include include/Makefile.am
-include sample/Makefile.am
-include test/Makefile.am
+include include/include.am
+include sample/include.am
+include test/include.am
 
 if BUILD_WIN32
 
diff --git a/include/Makefile.am b/include/include.am
similarity index 100%
rename from include/Makefile.am
rename to include/include.am
diff --git a/sample/Makefile.am b/sample/include.am
similarity index 100%
rename from sample/Makefile.am
rename to sample/include.am
diff --git a/test/Makefile.am b/test/include.am
similarity index 100%
rename from test/Makefile.am
rename to test/include.am