diff --git a/kernel/x86_64/dscal.c b/kernel/x86_64/dscal.c
index ef9a0a6ba..d0d7801fd 100644
--- a/kernel/x86_64/dscal.c
+++ b/kernel/x86_64/dscal.c
@@ -136,8 +136,8 @@ static void dscal_kernel_inc_8(BLASLONG n, FLOAT *alpha, FLOAT *x, BLASLONG inc_
 	"jnz    1b					    \n\t"
 
         :
+          "+r" (n)      // 0
         :
-          "r" (n),      // 0
           "r" (x),      // 1
           "r" (x1),     // 2
           "r" (alpha),  // 3