diff --git a/configure b/configure
index 34b371ea14..ad112d7880 100755
--- a/configure
+++ b/configure
@@ -47001,13 +47001,13 @@ fi
 
 TOOLKIT_LOWERCASE=xxx
 if test "$TOOLKIT" = "MAC"; then
-    TOOLKIT_LOWERCASE=osx
+    TOOLKIT_LOWERCASE=osx_carbon
 fi
 if test "$TOOLKIT" = "OSX_CARBON"; then
-    TOOLKIT_LOWERCASE=osx
+    TOOLKIT_LOWERCASE=osx_carbon
 fi
 if test "$TOOLKIT" = "OSX_COCOA"; then
-    TOOLKIT_LOWERCASE=osx
+    TOOLKIT_LOWERCASE=osx_cocoa
 fi
 if test "$TOOLKIT_LOWERCASE" = "xxx"; then
     TOOLKIT_LOWERCASE=`echo $TOOLKIT | tr '[A-Z]' '[a-z]'`
diff --git a/configure.in b/configure.in
index fc1357f7ac..764a9eacfb 100644
--- a/configure.in
+++ b/configure.in
@@ -7601,13 +7601,13 @@ AC_SUBST(DEBUG_INFO)
 AC_SUBST(DEBUG_FLAG)
 TOOLKIT_LOWERCASE=xxx
 if test "$TOOLKIT" = "MAC"; then
-    TOOLKIT_LOWERCASE=osx
+    TOOLKIT_LOWERCASE=osx_carbon
 fi
 if test "$TOOLKIT" = "OSX_CARBON"; then
-    TOOLKIT_LOWERCASE=osx
+    TOOLKIT_LOWERCASE=osx_carbon
 fi
 if test "$TOOLKIT" = "OSX_COCOA"; then
-    TOOLKIT_LOWERCASE=osx
+    TOOLKIT_LOWERCASE=osx_cocoa
 fi
 if test "$TOOLKIT_LOWERCASE" = "xxx"; then
     TOOLKIT_LOWERCASE=`echo $TOOLKIT | tr '[[A-Z]]' '[[a-z]]'`