diff --git a/racket/src/ac/sdk_arg.m4 b/racket/src/ac/sdk_arg.m4
index 76ac5e6641..7ffb36d5fe 100644
--- a/racket/src/ac/sdk_arg.m4
+++ b/racket/src/ac/sdk_arg.m4
@@ -1,7 +1,7 @@
 AC_ARG_ENABLE(sdk,     [  --enable-sdk=<path>     use Mac OS 10.4 SDK directory])
 AC_ARG_ENABLE(sdk,     [  --enable-sdk5=<path>    use Mac OS 10.5 SDK directory])
 AC_ARG_ENABLE(sdk,     [  --enable-sdk6=<path>    use Mac OS 10.6 SDK directory])
-AC_ARG_ENABLE(sdk,     [  --enable-sdk7=<path>    use Mac OS 10.7 SDK directory])
+AC_ARG_ENABLE(sdk,     [  --enable-sdk9=<path>    use Mac OS 10.9 SDK directory])
 AC_ARG_ENABLE(sdk,     [  --enable-ios=<path>     use iOS SDK directory])
 AC_ARG_ENABLE(sdk,     [  --enable-sysroot=<path> use sysroot directory (e.g., for Android)])
 AC_ARG_ENABLE(xonx,    [  --enable-xonx           use Unix style (e.g., use Gtk) for Mac OS])
diff --git a/racket/src/cfg-cs b/racket/src/cfg-cs
index 23ef78a3a9..d0fbe4032a 100755
--- a/racket/src/cfg-cs
+++ b/racket/src/cfg-cs
@@ -1293,7 +1293,7 @@ Optional Features:
   --enable-sdk=<path>     use Mac OS 10.4 SDK directory
   --enable-sdk5=<path>    use Mac OS 10.5 SDK directory
   --enable-sdk6=<path>    use Mac OS 10.6 SDK directory
-  --enable-sdk7=<path>    use Mac OS 10.7 SDK directory
+  --enable-sdk9=<path>    use Mac OS 10.9 SDK directory
   --enable-ios=<path>     use iOS SDK directory
   --enable-sysroot=<path> use sysroot directory (e.g., for Android)
   --enable-xonx           use Unix style (e.g., use Gtk) for Mac OS
diff --git a/racket/src/cfg-racket b/racket/src/cfg-racket
index 29aa52419e..77f303e1f6 100755
--- a/racket/src/cfg-racket
+++ b/racket/src/cfg-racket
@@ -1478,7 +1478,7 @@ Optional Features:
   --enable-sdk=<path>     use Mac OS 10.4 SDK directory
   --enable-sdk5=<path>    use Mac OS 10.5 SDK directory
   --enable-sdk6=<path>    use Mac OS 10.6 SDK directory
-  --enable-sdk7=<path>    use Mac OS 10.7 SDK directory
+  --enable-sdk9=<path>    use Mac OS 10.9 SDK directory
   --enable-ios=<path>     use iOS SDK directory
   --enable-sysroot=<path> use sysroot directory (e.g., for Android)
   --enable-xonx           use Unix style (e.g., use Gtk) for Mac OS
diff --git a/racket/src/cs/c/configure b/racket/src/cs/c/configure
index 930aa03d00..bd20e8b18a 100755
--- a/racket/src/cs/c/configure
+++ b/racket/src/cs/c/configure
@@ -1425,7 +1425,7 @@ Optional Features:
   --enable-sdk=<path>     use Mac OS 10.4 SDK directory
   --enable-sdk5=<path>    use Mac OS 10.5 SDK directory
   --enable-sdk6=<path>    use Mac OS 10.6 SDK directory
-  --enable-sdk7=<path>    use Mac OS 10.7 SDK directory
+  --enable-sdk9=<path>    use Mac OS 10.9 SDK directory
   --enable-ios=<path>     use iOS SDK directory
   --enable-sysroot=<path> use sysroot directory (e.g., for Android)
   --enable-xonx           use Unix style (e.g., use Gtk) for Mac OS