diff --git a/core/src/dsp/math.h b/core/src/dsp/math.h
index b2f8e8ec..62241d1f 100644
--- a/core/src/dsp/math.h
+++ b/core/src/dsp/math.h
@@ -124,7 +124,7 @@ namespace dsp {
             }
 
             if constexpr (std::is_same_v<T, complex_t>) {
-                volk_32fc_x2_multiply_32fc(out.writeBuf, _a->readBuf, _b->readBuf, a_count);
+                volk_32fc_x2_multiply_32fc((lv_32fc_t*)out.writeBuf, (lv_32fc_t*)_a->readBuf, (lv_32fc_t*)_b->readBuf, a_count);
             }
             else {
                 volk_32f_x2_multiply_32f(out.writeBuf, _a->readBuf, _b->readBuf, a_count);
diff --git a/core/src/dsp/types.h b/core/src/dsp/types.h
index 787bb590..af1e35c8 100644
--- a/core/src/dsp/types.h
+++ b/core/src/dsp/types.h
@@ -2,19 +2,19 @@
 
 namespace dsp {
     struct complex_t {
-        complex_t& operator*(const float& b) {
+        complex_t operator*(const float b) {
             return complex_t{re*b, im*b};
         }
 
-        complex_t& operator*(const complex_t& b) {
+        complex_t operator*(const complex_t& b) {
             return complex_t{(re*b.re) - (im*b.im), (im*b.re) + (re*b.im)};
         }
 
-        complex_t& operator+(const complex_t& b) {
+        complex_t operator+(const complex_t& b) {
             return complex_t{re+b.re, im+b.im};
         }
 
-        complex_t& operator-(const complex_t& b) {
+        complex_t operator-(const complex_t& b) {
             return complex_t{re-b.re, im-b.im};
         }
 
@@ -27,15 +27,15 @@ namespace dsp {
     };
 
     struct stereo_t {
-        stereo_t& operator*(const float& b) {
+        stereo_t operator*(const float b) {
             return stereo_t{l*b, r*b};
         }
 
-        stereo_t& operator+(const stereo_t& b) {
+        stereo_t operator+(const stereo_t& b) {
             return stereo_t{l+b.l, r+b.r};
         }
 
-        stereo_t& operator-(const stereo_t& b) {
+        stereo_t operator-(const stereo_t& b) {
             return stereo_t{l-b.l, r-b.r};
         }