diff --git a/configure b/configure
index 5aa56db3c6..a3cab8af38 100755
--- a/configure
+++ b/configure
@@ -1137,7 +1137,6 @@ enable_macosx_arch
 enable_compat28
 enable_compat30
 enable_rpath
-enable_objc_uniquifying
 enable_visibility
 enable_tls
 enable_repro_build
@@ -2078,7 +2077,6 @@ Optional Features:
   --enable-compat28       enable wxWidgets 2.8 compatibility
   --disable-compat30      disable wxWidgets 3.0 compatibility
   --disable-rpath         disable use of rpath for uninstalled builds
-  --enable-objc_uniquifying enable Objective-C class name uniquifying
   --disable-visibility    disable use of ELF symbols visibility even if supported
   --disable-tls           disable use of compiler TLS support
   --enable-repro-build    enable reproducible build mode
@@ -5996,36 +5994,6 @@ fi
 
 
 
-          enablestring=
-          defaultval=
-          if test -z "$defaultval"; then
-              if test x"$enablestring" = xdisable; then
-                  defaultval=yes
-              else
-                  defaultval=no
-              fi
-          fi
-
-          # Check whether --enable-objc_uniquifying was given.
-if test "${enable_objc_uniquifying+set}" = set; then :
-  enableval=$enable_objc_uniquifying;
-                          if test "$enableval" = yes; then
-                            wx_cv_use_objc_uniquifying='wxUSE_OBJC_UNIQUIFYING=yes'
-                          else
-                            wx_cv_use_objc_uniquifying='wxUSE_OBJC_UNIQUIFYING=no'
-                          fi
-
-else
-
-                          wx_cv_use_objc_uniquifying='wxUSE_OBJC_UNIQUIFYING=${'DEFAULT_wxUSE_OBJC_UNIQUIFYING":-$defaultval}"
-
-fi
-
-
-          eval "$wx_cv_use_objc_uniquifying"
-
-
-
           enablestring=disable
           defaultval=
           if test -z "$defaultval"; then
@@ -32701,11 +32669,6 @@ if test "$wxUSE_PRINTF_POS_PARAMS" = "yes"; then
 
 fi
 
-if test "$wxUSE_OBJC_UNIQUIFYING" = "yes"; then
-  $as_echo "#define wxUSE_OBJC_UNIQUIFYING 1" >>confdefs.h
-
-fi
-
 
 if test "$wxUSE_CONSOLE_EVENTLOOP" = "yes"; then
     $as_echo "#define wxUSE_CONSOLE_EVENTLOOP 1" >>confdefs.h
diff --git a/configure.in b/configure.in
index 723cfcdee3..408aa0a627 100644
--- a/configure.in
+++ b/configure.in
@@ -670,8 +670,6 @@ WX_ARG_DISABLE(compat30,     [  --disable-compat30      disable wxWidgets 3.0 co
 
 WX_ARG_DISABLE(rpath,        [  --disable-rpath         disable use of rpath for uninstalled builds], wxUSE_RPATH)
 
-WX_ARG_ENABLE(objc_uniquifying,[  --enable-objc_uniquifying enable Objective-C class name uniquifying], wxUSE_OBJC_UNIQUIFYING)
-
 WX_ARG_DISABLE(visibility,   [  --disable-visibility    disable use of ELF symbols visibility even if supported], wxUSE_VISIBILITY)
 WX_ARG_DISABLE(tls,          [  --disable-tls           disable use of compiler TLS support], wxUSE_COMPILER_TLS)
 
@@ -5801,10 +5799,6 @@ if test "$wxUSE_PRINTF_POS_PARAMS" = "yes"; then
   AC_DEFINE(wxUSE_PRINTF_POS_PARAMS)
 fi
 
-if test "$wxUSE_OBJC_UNIQUIFYING" = "yes"; then
-  AC_DEFINE(wxUSE_OBJC_UNIQUIFYING)
-fi
-
 dnl ---------------------------------------------------------------------------
 dnl console event loop stuff
 dnl ---------------------------------------------------------------------------
diff --git a/docs/doxygen/mainpages/const_wxusedef.h b/docs/doxygen/mainpages/const_wxusedef.h
index d414884997..259416c087 100644
--- a/docs/doxygen/mainpages/const_wxusedef.h
+++ b/docs/doxygen/mainpages/const_wxusedef.h
@@ -307,13 +307,6 @@ library:
 @endDefList
 
 
-@section page_wxusedef_cocoa Cocoa Symbols
-
-@beginDefList
-@itemdef{wxUSE_OBJC_UNIQUIFYING, Enable Objective-C class name uniquifying.}
-@endDefList
-
-
 @section page_wxusedef_msw wxMSW Symbols
 
 @beginDefList
diff --git a/setup.h.in b/setup.h.in
index a4da53aa94..61f5bf7b1f 100644
--- a/setup.h.in
+++ b/setup.h.in
@@ -891,11 +891,6 @@
  */
 #define wxUSE_WEBKIT 0
 
-/*
- * Objective-C class name uniquifying
- */
-#define wxUSE_OBJC_UNIQUIFYING 0
-
 /*
  * The const keyword is being introduced more in wxWindows.
  * You can use this setting to maintain backward compatibility.
diff --git a/setup.h_vms b/setup.h_vms
index f327f42a5f..d1f7842057 100644
--- a/setup.h_vms
+++ b/setup.h_vms
@@ -980,11 +980,6 @@ typedef pid_t GPid;
  */
 #define wxUSE_WEBKIT 1
 
-/*
- * Objective-C class name uniquifying
- */
-#define wxUSE_OBJC_UNIQUIFYING 0
-
 /*
  * The const keyword is being introduced more in wxWindows.
  * You can use this setting to maintain backward compatibility.