diff --git a/firmware/common/utility.cpp b/firmware/common/utility.cpp
index 715a0496..8c1dce72 100644
--- a/firmware/common/utility.cpp
+++ b/firmware/common/utility.cpp
@@ -59,7 +59,7 @@ uint32_t gcd(const uint32_t u, const uint32_t v) {
 }
 #endif
 
-static float fast_log2(const float val) {
+float fast_log2(const float val) {
 	// Thank you Stack Overflow!
 	// http://stackoverflow.com/questions/9411823/fast-log2float-x-implementation-c
 	union {
diff --git a/firmware/common/utility.hpp b/firmware/common/utility.hpp
index 02caa1a1..4c153a9f 100644
--- a/firmware/common/utility.hpp
+++ b/firmware/common/utility.hpp
@@ -69,6 +69,8 @@ constexpr size_t log_2(const size_t n, const size_t p = 0) {
 	return (n <= 1) ? p : log_2(n / 2, p + 1);
 }
 
+float fast_log2(const float val);
+
 float complex16_mag_squared_to_dbv_norm(const float c16_mag_squared);
 
 inline float magnitude_squared(const std::complex<float> c) {