diff --git a/config.h.meson b/config.h.meson
index 4a8a4dd847..89dad71296 100644
--- a/config.h.meson
+++ b/config.h.meson
@@ -229,9 +229,6 @@
 /* Have PTHREAD_PRIO_INHERIT. */
 #mesondefine HAVE_PTHREAD_PRIO_INHERIT
 
-/* Define to 1 if the system has the type `ptrdiff_t'. */
-#mesondefine HAVE_PTRDIFF_T
-
 /* Define if RDTSC is available */
 #mesondefine HAVE_RDTSC
 
diff --git a/meson.build b/meson.build
index f80fd991da..28aeb731ac 100644
--- a/meson.build
+++ b/meson.build
@@ -183,10 +183,6 @@ if cc.has_function('clock_gettime', prefix : '#include <time.h>')
   cdata.set('HAVE_CLOCK_GETTIME', 1)
 endif
 
-if cc.has_type('ptrdiff_t')
-  cdata.set('HAVE_PTRDIFF_T')
-endif
-
 # We only want to use the __declspec(dllexport/import) dance in GST_EXPORT when
 # building with MSVC
 if cc.get_id() == 'msvc'