diff --git a/config.h.meson b/config.h.meson
index 7337165082..bda542035b 100644
--- a/config.h.meson
+++ b/config.h.meson
@@ -239,6 +239,9 @@
 /* Define to path of pppd binary */
 #mesondefine PPPD_PATH
 
+/* The detected ppp API version */
+#mesondefine NM_PPP_VERSION_2_5_OR_NEWER
+
 /* Define if you have iwd support */
 #mesondefine WITH_IWD
 
diff --git a/configure.ac b/configure.ac
index d339c856a8..5d746ef81c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -754,10 +754,12 @@ fi
 AC_SUBST(DBUS_SYS_DIR)
 
 # pppd
+NM_PPP_VERSION_2_5_OR_NEWER=0
 PPPD_VERSION=2.4.9
 PKG_CHECK_EXISTS([pppd], [
 	PPPD_VERSION=`$PKG_CONFIG --modversion pppd`
 	PPPD_CFLAGS=`$PKG_CONFIG --cflags pppd`
+	NM_PPP_VERSION_2_5_OR_NEWER=1
 ])
 
 AC_ARG_ENABLE(ppp,
@@ -783,6 +785,7 @@ else
 	PPPD_PLUGIN_DIR="${libdir}/pppd/$PPPD_VERSION"
 fi
 AC_SUBST(PPPD_PLUGIN_DIR)
+AC_DEFINE_UNQUOTED(NM_PPP_VERSION_2_5_OR_NEWER, $NM_PPP_VERSION_2_5_OR_NEWER, [The detected ppp API version])
 
 AC_ARG_WITH(pppd, AS_HELP_STRING([--with-pppd=/path/to/pppd], [path to pppd binary]))
 if test "x${with_pppd}" = x; then
diff --git a/meson.build b/meson.build
index e9d7f16c0e..c108c3bfb5 100644
--- a/meson.build
+++ b/meson.build
@@ -560,10 +560,12 @@ config_h.set10('WITH_FIREWALLD_ZONE', enable_firewalld_zone)
 
 # pppd
 enable_ppp = get_option('ppp')
+NM_PPP_VERSION_2_5_OR_NEWER = 0
 if enable_ppp
   pppd_dep = dependency('pppd', required: false)
   if (pppd_dep.found())
     pppd_version = pppd_dep.version()
+    NM_PPP_VERSION_2_5_OR_NEWER = 1
   else
     assert(cc.has_header('pppd/pppd.h'), 'couldn\'t find pppd.h. pppd development headers are required')
     pppd_version = '2.4.9'
@@ -584,6 +586,7 @@ if enable_ppp
   endif
 endif
 config_h.set10('WITH_PPP', enable_ppp)
+config_h.set10('NM_PPP_VERSION_2_5_OR_NEWER', NM_PPP_VERSION_2_5_OR_NEWER)
 
 # ModemManager1 with libmm-glib
 enable_modem_manager = get_option('modem_manager')
diff --git a/src/core/ppp/nm-pppd-compat.c b/src/core/ppp/nm-pppd-compat.c
index fd67eb3493..f7940c5501 100644
--- a/src/core/ppp/nm-pppd-compat.c
+++ b/src/core/ppp/nm-pppd-compat.c
@@ -75,6 +75,10 @@ _NM_PRAGMA_WARNING_REENABLE;
 
 /*****************************************************************************/
 
+G_STATIC_ASSERT(PPP_VERSION_2_5_OR_NEWER == NM_PPP_VERSION_2_5_OR_NEWER);
+
+/*****************************************************************************/
+
 G_STATIC_ASSERT((gint64) NM_PPP_STATUS_DEAD == PHASE_DEAD);
 G_STATIC_ASSERT((gint64) NM_PPP_STATUS_INITIALIZE == PHASE_INITIALIZE);
 G_STATIC_ASSERT((gint64) NM_PPP_STATUS_SERIALCONN == PHASE_SERIALCONN);