diff --git a/lib/pengine/Makefile.am b/lib/pengine/Makefile.am
index 15369f230d..e61c38c20e 100644
--- a/lib/pengine/Makefile.am
+++ b/lib/pengine/Makefile.am
@@ -1,80 +1,80 @@
 #
 # Copyright 2004-2024 the Pacemaker project contributors
 #
 # The version control history for this file may have further details.
 #
 # This source code is licensed under the GNU General Public License version 2
 # or later (GPLv2+) WITHOUT ANY WARRANTY.
 #
 include $(top_srcdir)/mk/common.mk
 
 # Without "." here, check-recursive will run through the subdirectories first
 # and then run "make check" here.  This will fail, because there's things in
 # the subdirectories that need check_LTLIBRARIES built first.  Adding "." here
 # changes the order so the subdirectories are processed afterwards.
 SUBDIRS = . tests
 
 ## libraries
 lib_LTLIBRARIES		= libpe_rules.la 	\
 			  libpe_status.la
 check_LTLIBRARIES 	= libpe_status_test.la
 
 noinst_HEADERS		= pe_status_private.h
 
 libpe_rules_la_LDFLAGS	= -version-info 51:0:0
 
 libpe_rules_la_CFLAGS	= $(CFLAGS_HARDENED_LIB)
 libpe_rules_la_LDFLAGS	+= $(LDFLAGS_HARDENED_LIB)
 
 libpe_rules_la_LIBADD	= $(top_builddir)/lib/common/libcrmcommon.la
 
 ## Library sources (*must* use += format for bumplibs)
-libpe_rules_la_SOURCES	= rules.c
+libpe_rules_la_SOURCES	= rules_compat.c
 libpe_rules_la_SOURCES	+= rules_alerts.c
 
 libpe_status_la_LDFLAGS	= -version-info 56:0:0
 
 libpe_status_la_CFLAGS	= $(CFLAGS_HARDENED_LIB)
 libpe_status_la_LDFLAGS	+= $(LDFLAGS_HARDENED_LIB)
 
 libpe_status_la_LIBADD	= $(top_builddir)/lib/common/libcrmcommon.la
 
 ## Library sources (*must* use += format for bumplibs)
 libpe_status_la_SOURCES	=
 libpe_status_la_SOURCES	+= bundle.c
 libpe_status_la_SOURCES	+= clone.c
 libpe_status_la_SOURCES	+= complex.c
 libpe_status_la_SOURCES	+= failcounts.c
 libpe_status_la_SOURCES	+= group.c
 libpe_status_la_SOURCES	+= native.c
 libpe_status_la_SOURCES	+= pe_actions.c
 libpe_status_la_SOURCES	+= pe_health.c
 libpe_status_la_SOURCES	+= pe_digest.c
 libpe_status_la_SOURCES	+= pe_notif.c
 libpe_status_la_SOURCES	+= pe_output.c
 libpe_status_la_SOURCES	+= remote.c
-libpe_status_la_SOURCES	+= rules.c
+libpe_status_la_SOURCES	+= rules_compat.c
 libpe_status_la_SOURCES	+= status.c
 libpe_status_la_SOURCES	+= tags.c
 libpe_status_la_SOURCES	+= unpack.c
 libpe_status_la_SOURCES	+= utils.c
 
 #
 # libpe_status_test is only used with unit tests, so we can
 # mock system calls.  See lib/common/mock.c for details.
 #
 
 include $(top_srcdir)/mk/tap.mk
 
 libpe_status_test_la_SOURCES = $(libpe_status_la_SOURCES)
 libpe_status_test_la_LDFLAGS = $(libpe_status_la_LDFLAGS) 	\
 			       -rpath $(libdir) 		\
 			       $(LDFLAGS_WRAP)
 # See comments on libcrmcommon_test_la in lib/common/Makefile.am regarding these flags.
 libpe_status_test_la_CFLAGS = $(libpe_status_la_CFLAGS) \
 			      -DPCMK__UNIT_TESTING 	\
 			      -fno-builtin 		\
 			      -fno-inline
 libpe_status_test_la_LIBADD = $(top_builddir)/lib/common/libcrmcommon_test.la 	\
 			      -lcmocka 						\
 			      -lm
diff --git a/lib/pengine/rules.c b/lib/pengine/rules_compat.c
similarity index 100%
rename from lib/pengine/rules.c
rename to lib/pengine/rules_compat.c