diff --git a/libfreedv/freedv_filter.cpp b/libfreedv/freedv_filter.cpp
index 032db43c2..6a54415ff 100644
--- a/libfreedv/freedv_filter.cpp
+++ b/libfreedv/freedv_filter.cpp
@@ -25,7 +25,7 @@
 
 #include "fdv_arm_math.h"
 
-#define cmplx(value) (COSF(value) + SINF(value) * I)
+#define cmplx(value) (std::complex<float>{cos(value), sin(value)})
 
 namespace FreeDV
 {