diff --git a/src/dsp/cost_sse2.c b/src/dsp/cost_sse2.c
index 96f8f7fd..5fca4b4a 100644
--- a/src/dsp/cost_sse2.c
+++ b/src/dsp/cost_sse2.c
@@ -68,12 +68,10 @@ static int GetResidualCostSSE2(int ctx0, const VP8Residual* const res) {
     const __m128i kCst67 = _mm_set1_epi8(MAX_VARIABLE_LEVEL);
     const __m128i c0 = _mm_loadu_si128((const __m128i*)&res->coeffs[0]);
     const __m128i c1 = _mm_loadu_si128((const __m128i*)&res->coeffs[8]);
-    const __m128i D0_m = _mm_min_epi16(c0, zero);
-    const __m128i D0_p = _mm_max_epi16(c0, zero);
-    const __m128i D1_m = _mm_min_epi16(c1, zero);
-    const __m128i D1_p = _mm_max_epi16(c1, zero);
-    const __m128i E0 = _mm_sub_epi16(D0_p, D0_m);   // abs(v), 16b
-    const __m128i E1 = _mm_sub_epi16(D1_p, D1_m);
+    const __m128i D0 = _mm_sub_epi16(zero, c0);
+    const __m128i D1 = _mm_sub_epi16(zero, c1);
+    const __m128i E0 = _mm_max_epi16(c0, D0);   // abs(v), 16b
+    const __m128i E1 = _mm_max_epi16(c1, D1);
     const __m128i F = _mm_packs_epi16(E0, E1);
     const __m128i G = _mm_min_epu8(F, kCst2);    // context = 0,1,2
     const __m128i H = _mm_min_epu8(F, kCst67);   // clamp_level in [0..67]