diff --git a/audio/utils.h b/audio/utils.h
index bed6110fae..3c17c00540 100644
--- a/audio/utils.h
+++ b/audio/utils.h
@@ -3,7 +3,8 @@
 
 #include <stdint.h>
 
-#ifdef __SSE2__
+#if __SSE2__
+#include <mmintrin.h>
 #include <emmintrin.h>
 #define audio_convert_s16_to_float audio_convert_s16_to_float_SSE2
 #define audio_convert_float_to_s16 audio_convert_float_to_s16_SSE2
@@ -29,7 +30,7 @@ static inline void audio_convert_float_to_s16_C(int16_t *out,
    }
 }
 
-#ifdef __SSE2__
+#if __SSE2__
 static inline void audio_convert_s16_to_float_SSE2(float *out,
       const int16_t *in, unsigned samples)
 {
@@ -47,7 +48,7 @@ static inline void audio_convert_s16_to_float_SSE2(float *out,
       __m64 input = *(const __m64*)in;
       __m128 reg = _mm_cvtpi16_ps(input);
       __m128 res = _mm_mul_ps(reg, factor);
-      *(__m128*)out = res;
+      _mm_store_ps(out, res);
    }
 
    audio_convert_s16_to_float_C(out, in, samples - i);
@@ -67,7 +68,7 @@ static inline void audio_convert_float_to_s16_SSE2(int16_t *out,
    unsigned i;
    for (i = 0; i + 4 <= samples; i += 4, in += 4, out += 4)
    {
-      __m128 input = *(const __m128*)in;
+      __m128 input = _mm_load_ps(in);
       __m128 res = _mm_mul_ps(input, factor);
       __m64 output = _mm_cvtps_pi16(res);
       *(__m64*)out = output;