diff --git a/src/layer/x86/convolution_im2col_gemm_int8.h b/src/layer/x86/convolution_im2col_gemm_int8.h
index c6851a06005..2a72bbc7080 100644
--- a/src/layer/x86/convolution_im2col_gemm_int8.h
+++ b/src/layer/x86/convolution_im2col_gemm_int8.h
@@ -482,7 +482,6 @@ static void convolution_im2col_pack_A_tile_int8(const Mat& A, Mat& AT, int i, in
         const signed char* p3 = (const signed char*)A + (i + ii + 3) * A_hstep + k;
 
         int kk = 0;
-#if defined(__x86_64__) || defined(_M_X64)
         for (; kk + 15 < max_kk; kk += 16)
         {
             __m128i _r0 = _mm_loadu_si128((const __m128i*)p0);
@@ -525,7 +524,6 @@ static void convolution_im2col_pack_A_tile_int8(const Mat& A, Mat& AT, int i, in
             p2 += 8;
             p3 += 8;
         }
-#endif // defined(__x86_64__) || defined(_M_X64)
         for (; kk + 1 < max_kk; kk += 2)
         {
             pp[0] = p0[0];
@@ -563,7 +561,6 @@ static void convolution_im2col_pack_A_tile_int8(const Mat& A, Mat& AT, int i, in
 
         int kk = 0;
 #if __SSE2__
-#if defined(__x86_64__) || defined(_M_X64)
         for (; kk + 15 < max_kk; kk += 16)
         {
             __m128i _r0 = _mm_loadu_si128((const __m128i*)p0);
@@ -586,7 +583,6 @@ static void convolution_im2col_pack_A_tile_int8(const Mat& A, Mat& AT, int i, in
             p0 += 8;
             p1 += 8;
         }
-#endif // defined(__x86_64__) || defined(_M_X64)
 #endif // __SSE2__
         for (; kk + 1 < max_kk; kk += 2)
         {