diff --git a/src/processors/other/poly_octave/PolyOctave.cpp b/src/processors/other/poly_octave/PolyOctave.cpp
index 57f8062f..9afa0ee2 100644
--- a/src/processors/other/poly_octave/PolyOctave.cpp
+++ b/src/processors/other/poly_octave/PolyOctave.cpp
@@ -134,7 +134,7 @@ void PolyOctave::processAudio (AudioBuffer<float>& buffer)
     chowdsp::BufferMath::applyGainSmoothedBuffer (down1OutBuffer, downOctaveGain);
 
     // "up1" processing
-    for (auto [ch, data_in, data_out] : chowdsp::buffer_iters::zip_channels (std::as_const (buffer), up1OutBuffer))
+    for (const auto& [ch, data_in, data_out] : chowdsp::buffer_iters::zip_channels (std::as_const (buffer), up1OutBuffer))
     {
 #if JUCE_INTEL
         if (use_avx)
@@ -157,7 +157,7 @@ void PolyOctave::processAudio (AudioBuffer<float>& buffer)
     chowdsp::BufferMath::applyGainSmoothedBuffer (up1OutBuffer, upOctaveGain);
 
     // "up2" processing
-    for (auto [ch, data_in, data_out] : chowdsp::buffer_iters::zip_channels (std::as_const (buffer), up2OutBuffer))
+    for (const auto& [ch, data_in, data_out] : chowdsp::buffer_iters::zip_channels (std::as_const (buffer), up2OutBuffer))
     {
 #if JUCE_INTEL
         if (use_avx)
diff --git a/src/processors/other/poly_octave/PolyOctaveV2FilterBankImpl.cpp b/src/processors/other/poly_octave/PolyOctaveV2FilterBankImpl.cpp
index 05c4715d..b54a136d 100644
--- a/src/processors/other/poly_octave/PolyOctaveV2FilterBankImpl.cpp
+++ b/src/processors/other/poly_octave/PolyOctaveV2FilterBankImpl.cpp
@@ -424,7 +424,7 @@ void process (ComplexERBFilterBank<N>& filter_bank,
                 const auto greater_than_eps = _mm_cmpgt_ps (x_abs_sq, eps_sse);
                 const auto x_abs_sq_r = _mm_and_ps (greater_than_eps, _mm_rcp_ps (x_abs_sq));
                 const auto x_im_sq_x3 = _mm_add_ps (x_im_sq, _mm_add_ps (x_im_sq, x_im_sq));
-                buffer_out_simd[n] = _mm_add_ps (buffer_out_simd[n], _mm_mul_ps (_mm_sub_ps (x_re_sq, x_im_sq_x3), x_abs_sq_r));
+                buffer_out_simd[n] = _mm_add_ps (buffer_out_simd[n], _mm_mul_ps (_mm_sub_ps (x_re_sq, x_im_sq_x3), _mm_mul_ps (x_re, x_abs_sq_r)));
             }
         }
 
@@ -576,7 +576,7 @@ void process_avx ([[maybe_unused]] ComplexERBFilterBank<N>& filter_bank,
                 const auto greater_than_eps = _mm256_cmp_ps (x_abs_sq, eps_avx, _CMP_GT_OQ);
                 const auto x_abs_sq_r = _mm256_and_ps (greater_than_eps, _mm256_rcp_ps (x_abs_sq));
                 const auto x_im_sq_x3 = _mm256_add_ps (x_im_sq, _mm256_add_ps (x_im_sq, x_im_sq));
-                buffer_out_simd[n] = _mm256_add_ps (buffer_out_simd[n], _mm256_mul_ps (_mm256_sub_ps (x_re_sq, x_im_sq_x3), x_abs_sq_r));
+                buffer_out_simd[n] = _mm256_add_ps (buffer_out_simd[n], _mm256_mul_ps (_mm256_sub_ps (x_re_sq, x_im_sq_x3), _mm256_mul_ps (x_re, x_abs_sq_r)));
             }
         }