diff --git a/cbits/simd_avx2.c b/cbits/simd_avx2.c
--- a/cbits/simd_avx2.c
+++ b/cbits/simd_avx2.c
@@ -39,15 +39,15 @@
 #if defined(AVX2_ENABLED)
   uint32_t *target32 = (uint32_t *)target;
 
-  __m256 v_comparand = _mm256_set1_epi8(byte);
+  __m256i v_comparand = _mm256_set1_epi8(byte);
 
   uint32_t *out_mask = (uint32_t*)target;
 
   size_t i;
 
   for (i = 0; i < target_length * 2; ++i) {
-    __m256 v_data_a = *(__m256*)(source + (i * 32));
-    __m256 v_results_a = _mm256_cmpeq_epi8(v_data_a, v_comparand);
+    __m256i v_data_a = *(__m256i *)(source + (i * 32));
+    __m256i v_results_a = _mm256_cmpeq_epi8(v_data_a, v_comparand);
     uint32_t mask = (uint32_t)_mm256_movemask_epi8(v_results_a);
     target32[i] = mask;
   }
@@ -63,10 +63,10 @@
   size_t i;
 
   for (i = 0; i < target_length; i += 32) {
-    __m256 v_data_a   = *(__m256*)(source_a + i);
-    __m256 v_data_b   = *(__m256*)(source_b + i);
-    __m256 v_results  = _mm256_and_si256(v_data_a, v_data_b);
-    *(__m256*)(target + i) = v_results;
+    __m256i v_data_a   = *(__m256i *)(source_a + i);
+    __m256i v_data_b   = *(__m256i *)(source_b + i);
+    __m256i v_results  = _mm256_and_si256(v_data_a, v_data_b);
+    *(__m256i *)(target + i) = v_results;
   }
 #endif
 }
@@ -80,10 +80,10 @@
   size_t i;
 
   for (i = 0; i < target_length; i += 32) {
-    __m256 v_data_a   = *(__m256*)(source_a + i);
-    __m256 v_data_b   = *(__m256*)(source_b + i);
-    __m256 v_results  = _mm256_andnot_si256(v_data_a, v_data_b);
-    *(__m256*)(target + i) = v_results;
+    __m256i v_data_a   = *(__m256i *)(source_a + i);
+    __m256i v_data_b   = *(__m256i *)(source_b + i);
+    __m256i v_results  = _mm256_andnot_si256(v_data_a, v_data_b);
+    *(__m256i *)(target + i) = v_results;
   }
 #endif
 }
@@ -93,14 +93,14 @@
     size_t target_length,
     uint8_t *source) {
 #if defined(AVX2_ENABLED)
-  __m256 ones = _mm256_set1_epi8(0xff);
+  __m256i ones = _mm256_set1_epi8(0xff);
 
   size_t i;
 
   for (i = 0; i < target_length; i += 32) {
-    __m256 v_data     = *(__m256*)(source + i);
-    __m256 v_results  = _mm256_xor_si256(v_data, ones);
-    *(__m256*)(target + i) = v_results;
+    __m256i v_data     = *(__m256i *)(source + i);
+    __m256i v_results  = _mm256_xor_si256(v_data, ones);
+    *(__m256i *)(target + i) = v_results;
   }
 #endif
 }
@@ -114,10 +114,10 @@
   size_t i;
 
   for (i = 0; i < target_length; i += 32) {
-    __m256 v_data_a   = *(__m256*)(source_a + i);
-    __m256 v_data_b   = *(__m256*)(source_b + i);
-    __m256 v_results  = _mm256_or_si256(v_data_a, v_data_b);
-    *(__m256*)(target + i) = v_results;
+    __m256i v_data_a   = *(__m256i *)(source_a + i);
+    __m256i v_data_b   = *(__m256i *)(source_b + i);
+    __m256i v_results  = _mm256_or_si256(v_data_a, v_data_b);
+    *(__m256i *)(target + i) = v_results;
   }
 #endif
 }
@@ -131,10 +131,10 @@
   size_t i;
 
   for (i = 0; i < target_length; i += 32) {
-    __m256 v_data_a   = *(__m256*)(source_a + i);
-    __m256 v_data_b   = *(__m256*)(source_b + i);
-    __m256 v_results  = _mm256_xor_si256(v_data_a, v_data_b);
-    *(__m256*)(target + i) = v_results;
+    __m256i v_data_a   = *(__m256i *)(source_a + i);
+    __m256i v_data_b   = *(__m256i *)(source_b + i);
+    __m256i v_results  = _mm256_xor_si256(v_data_a, v_data_b);
+    *(__m256i *)(target + i) = v_results;
   }
 #endif
 }
diff --git a/hw-simd.cabal b/hw-simd.cabal
--- a/hw-simd.cabal
+++ b/hw-simd.cabal
@@ -3,7 +3,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           hw-simd
-version:        0.1.1.1
+version:        0.1.1.2
 synopsis:       SIMD library
 description:    Please see the README on Github at <https://github.com/haskell-works/hw-simd#readme>
 category:       Data, Bit, SIMD