diff --git a/src/gui/painting/qdrawingprimitive_sse2_p.h b/src/gui/painting/qdrawingprimitive_sse2_p.h
index 22d1205074..aded999cdd 100644
--- a/src/gui/painting/qdrawingprimitive_sse2_p.h
+++ b/src/gui/painting/qdrawingprimitive_sse2_p.h
@@ -245,8 +245,7 @@ inline QRgb qUnpremultiply_sse4(QRgb p)
     const uint invAlpha = qt_inv_premul_factor[alpha];
     const __m128i via = _mm_set1_epi32(invAlpha);
     const __m128i vr = _mm_set1_epi32(0x8000);
-    __m128i vl = _mm_unpacklo_epi8(_mm_cvtsi32_si128(p), _mm_setzero_si128());
-    vl = _mm_unpacklo_epi16(vl, _mm_setzero_si128());
+    __m128i vl = _mm_cvtepu8_epi32(_mm_cvtsi32_si128(p));
     vl = _mm_mullo_epi32(vl, via);
     vl = _mm_add_epi32(vl, vr);
     vl = _mm_srai_epi32(vl, 16);