diff --git a/libavcodec/i386/dsputil_mmx.c b/libavcodec/i386/dsputil_mmx.c
index 0ff06d48cbcb88736aab5597730060343ef36dd0..41aadc611957612e896adb8aa765f58892e69cbb 100644
--- a/libavcodec/i386/dsputil_mmx.c
+++ b/libavcodec/i386/dsputil_mmx.c
@@ -48,7 +48,7 @@ DECLARE_ALIGNED_16(const uint64_t, ff_pdw_80000000[2]) =
 DECLARE_ALIGNED_8 (const uint64_t, ff_pw_3  ) = 0x0003000300030003ULL;
 DECLARE_ALIGNED_8 (const uint64_t, ff_pw_4  ) = 0x0004000400040004ULL;
 DECLARE_ALIGNED_16(const xmm_t,    ff_pw_5  ) = {0x0005000500050005ULL, 0x0005000500050005ULL};
-DECLARE_ALIGNED_8 (const uint64_t, ff_pw_8  ) = 0x0008000800080008ULL;
+DECLARE_ALIGNED_16(const xmm_t,    ff_pw_8  ) = {0x0008000800080008ULL, 0x0008000800080008ULL};
 DECLARE_ALIGNED_8 (const uint64_t, ff_pw_15 ) = 0x000F000F000F000FULL;
 DECLARE_ALIGNED_16(const xmm_t,    ff_pw_16 ) = {0x0010001000100010ULL, 0x0010001000100010ULL};
 DECLARE_ALIGNED_8 (const uint64_t, ff_pw_20 ) = 0x0014001400140014ULL;
diff --git a/libavcodec/i386/dsputil_mmx.h b/libavcodec/i386/dsputil_mmx.h
index d944dbd43c7251b33f2d86a312e35c99d9029f1e..a4b3bfcdacacd946a43ee779e6249e89f45e5cdb 100644
--- a/libavcodec/i386/dsputil_mmx.h
+++ b/libavcodec/i386/dsputil_mmx.h
@@ -35,7 +35,7 @@ extern const uint64_t ff_pdw_80000000[2];
 extern const uint64_t ff_pw_3;
 extern const uint64_t ff_pw_4;
 extern const xmm_t    ff_pw_5;
-extern const uint64_t ff_pw_8;
+extern const xmm_t    ff_pw_8;
 extern const uint64_t ff_pw_15;
 extern const xmm_t    ff_pw_16;
 extern const uint64_t ff_pw_20;