diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 093d9a252f4..d45a2a70f32 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2015-12-08  Kirill Yukhin  <kirill.yukhin@intel.com>
+
+	* config/i386/sse.md (define_insn "<avx512>_vec_dup<mode>_1"): Fix
+	assembler to make source always 128bit.
+
 2015-12-08  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/48088
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index eb49c419b9e..6740edf7a9f 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -17223,8 +17223,9 @@
 	    (match_operand:VI_AVX512BW 1 "nonimmediate_operand" "v,m")
 	    (parallel [(const_int 0)]))))]
   "TARGET_AVX512F"
-  "vpbroadcast<ssemodesuffix>\t{%1, %0|%0, %<iptr>1}
-   vpbroadcast<ssemodesuffix>\t{%x1, %0|%0, %x1}"
+  "@
+   vpbroadcast<ssemodesuffix>\t{%x1, %0|%0, %x1}
+   vpbroadcast<ssemodesuffix>\t{%x1, %0|%0, %<iptr>1}"
   [(set_attr "type" "ssemov")
    (set_attr "prefix" "evex")
    (set_attr "mode" "<sseinsnmode>")])