diff --git a/old-configure.in b/old-configure.in
index e5b9b8b816ec..19868067250a 100644
--- a/old-configure.in
+++ b/old-configure.in
@@ -4325,13 +4325,8 @@ fi
 dnl ========================================================
 dnl = Apple platform decoder support
 dnl ========================================================
-if test "$MOZ_WIDGET_TOOLKIT" = "cocoa" || test "$MOZ_WIDGET_TOOLKIT" = "uikit"; then
-  MOZ_APPLEMEDIA=1
-fi
-
 if test "$COMPILE_ENVIRONMENT"; then
 if test -n "$MOZ_APPLEMEDIA"; then
-  AC_DEFINE(MOZ_APPLEMEDIA)
   # hack in frameworks for fmp4 - see bug 1029974
   # We load VideoToolbox and CoreMedia dynamically, so they don't appear here.
   LDFLAGS="$LDFLAGS -framework AudioToolbox"
@@ -8024,7 +8019,6 @@ AC_SUBST(MOZ_FMP4)
 AC_SUBST(MOZ_EME)
 AC_SUBST(MOZ_DIRECTSHOW)
 AC_SUBST(MOZ_ANDROID_OMX)
-AC_SUBST(MOZ_APPLEMEDIA)
 AC_SUBST(MOZ_OMX_PLUGIN)
 AC_SUBST(MOZ_BUILD_MOBILE_ANDROID_WITH_GRADLE)
 AC_SUBST(MOZ_VPX_ERROR_CONCEALMENT)
diff --git a/toolkit/moz.configure b/toolkit/moz.configure
index a95e1a4057be..ec231d608eac 100644
--- a/toolkit/moz.configure
+++ b/toolkit/moz.configure
@@ -145,3 +145,15 @@ def fc_freetype(value, toolkit):
     if value or (toolkit in ('gtk2', 'gtk3', 'qt') and
                  value.origin == 'default'):
         add_old_configure_assignment('USE_FC_FREETYPE', '1')
+
+
+# Apple platform decoder support
+# ==============================================================
+@depends(toolkit)
+def applemedia(toolkit):
+    if toolkit in ('cocoa', 'uikit'):
+        set_config('MOZ_APPLEMEDIA', '1')
+        set_define('MOZ_APPLEMEDIA', '1')
+        add_old_configure_assignment('MOZ_APPLEMEDIA', '1')
+        return True
+    return False