diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0ac58eee488..ea18d43c240 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -3,6 +3,8 @@
 	* configure.ac (multiarch): Use $enableval instead of $withval.
 	* configure: Regenerate.
 	* config/i386/t-kfreebsd (MULTILIB_OSDIRNAMES): Filter out x32.
+	* gcc/config/i386/t-linux64 (MULTILIB_OSDIRNAMES): Use
+	x86_64-linux-gnux32 as multiarch name for x32.
 
 2012-11-23  Tobias Burnus  <burnus@net-b.de>
 
diff --git a/gcc/config/i386/t-linux64 b/gcc/config/i386/t-linux64
index dfaf2763d89..d5bedf7bb7c 100644
--- a/gcc/config/i386/t-linux64
+++ b/gcc/config/i386/t-linux64
@@ -36,4 +36,4 @@ MULTILIB_OPTIONS    = $(subst $(comma),/,$(TM_MULTILIB_CONFIG))
 MULTILIB_DIRNAMES   = $(patsubst m%, %, $(subst /, ,$(MULTILIB_OPTIONS)))
 MULTILIB_OSDIRNAMES = m64=../lib64$(call if_multiarch,:x86_64-linux-gnu)
 MULTILIB_OSDIRNAMES+= m32=$(if $(wildcard $(shell echo $(SYSTEM_HEADER_DIR))/../../usr/lib32),../lib32,../lib)$(call if_multiarch,:i386-linux-gnu)
-MULTILIB_OSDIRNAMES+= mx32=../libx32$(call if_multiarch,:x32-linux-gnu)
+MULTILIB_OSDIRNAMES+= mx32=../libx32$(call if_multiarch,:x86_64-linux-gnux32)