diff --git a/apps/codecs/libspeex/ltp_arm4.h b/apps/codecs/libspeex/ltp_arm4.h
index 7479e8bfd0..af5342c569 100644
--- a/apps/codecs/libspeex/ltp_arm4.h
+++ b/apps/codecs/libspeex/ltp_arm4.h
@@ -172,10 +172,9 @@ void pitch_xcorr(const spx_word16_t *_x, const spx_word16_t *_y, spx_word32_t *c
             : "=r" (y0), "=r" (y1), "=r" (y2), "=r" (y3),
          "=r" (part1),  "=r" (part2),  "=r" (part3),  "=r" (part4),
          "=r" (x), "=r" (y), "=r" (x0),
-         "=m" (sum1), "=m" (sum2), "=m" (sum3), "=m" (sum4), "=r" (dead1)
+         "+m" (sum1), "+m" (sum2), "+m" (sum3), "+m" (sum4), "=r" (dead1)
             : "0" (y0), "1" (y1), "2" (y2), "3" (y3),
-            "8" (x), "9" (y),
-            "11" (sum1), "12" (sum2), "13" (sum3), "14" (sum4)
+            "8" (x), "9" (y)
             : "cc", "memory"
                               );
       }