diff --git a/include/crm/common/Makefile.am b/include/crm/common/Makefile.am
index 5f916b0792..04a2a1c266 100644
--- a/include/crm/common/Makefile.am
+++ b/include/crm/common/Makefile.am
@@ -1,48 +1,47 @@
 #
 # 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.
 #
 
 MAINTAINERCLEANFILES = Makefile.in
 
 headerdir=$(pkgincludedir)/crm/common
 
 header_HEADERS = acl.h 			\
 		 actions.h		\
 		 agents.h 		\
 		 cib.h 			\
 		 ipc.h 			\
 		 ipc_controld.h 	\
 		 ipc_pacemakerd.h 	\
 		 ipc_schedulerd.h 	\
 		 iso8601.h 		\
 		 logging.h 		\
 		 logging_compat.h 	\
 		 mainloop.h 		\
 		 nodes.h 		\
 		 nvpair.h 		\
 		 options.h 		\
 		 output.h 		\
 		 resources.h		\
 		 results.h 		\
 		 roles.h		\
 		 rules.h		\
 		 scheduler.h		\
 		 scheduler_types.h	\
 		 schemas.h		\
 		 scores.h		\
 		 tags.h			\
 		 tickets.h		\
 		 util.h 		\
 		 util_compat.h 		\
 		 xml.h 			\
 		 xml_compat.h		\
 		 xml_io.h		\
-		 xml_io_compat.h	\
 		 xml_names.h
 
 noinst_HEADERS = $(wildcard *internal.h)
diff --git a/include/crm/common/xml_io.h b/include/crm/common/xml_io.h
index a5e454cb8c..b90ba88f82 100644
--- a/include/crm/common/xml_io.h
+++ b/include/crm/common/xml_io.h
@@ -1,48 +1,44 @@
 /*
  * 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 Lesser General Public License
  * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
  */
 
 #ifndef PCMK__CRM_COMMON_XML_IO__H
 #define PCMK__CRM_COMMON_XML_IO__H
 
 #include <libxml/tree.h>    // xmlNode
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /**
  * \file
  * \brief Wrappers for and extensions to XML input/output functions
  * \ingroup core
  */
 
 /* Define compression parameters for IPC messages
  *
  * Compression costs a LOT, so we don't want to do it unless we're hitting
  * message limits. Currently, we use 128KB as the threshold, because higher
  * values don't play well with the heartbeat stack. With an earlier limit of
  * 10KB, compressing 184 of 1071 messages accounted for 23% of the total CPU
  * used by the cib.
  */
 #define CRM_BZ2_BLOCKS      4
 #define CRM_BZ2_WORK        20
 #define CRM_BZ2_THRESHOLD   (128 * 1024)
 
 void save_xml_to_file(const xmlNode *xml, const char *desc,
                       const char *filename);
 
-#if !defined(PCMK_ALLOW_DEPRECATED) || (PCMK_ALLOW_DEPRECATED == 1)
-#include <crm/common/xml_io_compat.h>
-#endif
-
 #ifdef __cplusplus
 }
 #endif
 
 #endif  // PCMK__CRM_COMMON_XML_IO__H
diff --git a/include/crm/common/xml_io_compat.h b/include/crm/common/xml_io_compat.h
deleted file mode 100644
index 80a6d20bd6..0000000000
--- a/include/crm/common/xml_io_compat.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * 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 Lesser General Public License
- * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
- */
-
-#ifndef PCMK__CRM_COMMON_XML_IO_COMPAT__H
-#define PCMK__CRM_COMMON_XML_IO_COMPAT__H
-
-#include <libxml/tree.h>        // xmlNode
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * \file
- * \brief Deprecated Pacemaker XML I/O API
- * \ingroup core
- * \deprecated Do not include this header directly. The XML APIs in this
- *             header, and the header itself, will be removed in a future
- *             release.
- */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif  // PCMK__CRM_COMMON_XML_IO_COMPAT__H