diff --git a/include/crm/crm_compat.h b/include/crm/crm_compat.h
index 1b1c5f5c33..b047b8ae25 100644
--- a/include/crm/crm_compat.h
+++ b/include/crm/crm_compat.h
@@ -1,58 +1,50 @@
 /*
  * 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_CRM_COMPAT__H
 #  define PCMK__CRM_CRM_COMPAT__H
 
 #include <strings.h>
 #include <glib.h>
 
 #include <crm/common/actions.h>
 #include <crm/common/scores.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 /**
  * \file
  * \brief Deprecated Pacemaker utilities
  * \ingroup core
  * \deprecated Do not include this header directly. The utilities in this
  *             header, and the header itself, will be removed in a future
  *             release.
  */
 
 //! \deprecated Use '\0' instead
 #define EOS '\0'
 
 //! \deprecated This defined constant will be removed in a future release
 #define MAX_IPC_DELAY 120
 
 // NOTE: sbd (as of at least 1.5.2) uses this
 //! \deprecated Use PCMK_SCORE_INFINITY instead
 #define CRM_SCORE_INFINITY PCMK_SCORE_INFINITY
 
-/* INFINITY might be defined elsewhere (such as math.h), so undefine it first.
- * This, of course, complicates any attempt to use the other definition in any
- * code that includes this header.
- */
-//! \deprecated Use PCMK_SCORE_INFINITY instead
-#undef INFINITY
-#define INFINITY PCMK_SCORE_INFINITY
-
 // NOTE: sbd (as of at least 1.5.2) uses this
 //! \deprecated Use GList * instead
 typedef GList *GListPtr;
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif // PCMK__CRM_CRM_COMPAT__H