diff --git a/firmware/baseband/baseband_dma.hpp b/firmware/baseband/baseband_dma.hpp
index cc41a7517..94827d4bc 100644
--- a/firmware/baseband/baseband_dma.hpp
+++ b/firmware/baseband/baseband_dma.hpp
@@ -31,8 +31,6 @@
 namespace baseband {
 namespace dma {
 
-using Handler = void (*)();
-
 void init();
 void configure(
 	baseband::sample_t* const buffer_base,
diff --git a/firmware/baseband/rssi_dma.hpp b/firmware/baseband/rssi_dma.hpp
index e543dcf6e..263dcfcf9 100644
--- a/firmware/baseband/rssi_dma.hpp
+++ b/firmware/baseband/rssi_dma.hpp
@@ -30,8 +30,6 @@ namespace rf {
 namespace rssi {
 namespace dma {
 
-using Handler = void (*)();
-
 void init();
 
 void allocate(size_t buffer_count, size_t items_per_buffer);
diff --git a/firmware/baseband/touch_dma.hpp b/firmware/baseband/touch_dma.hpp
index 777230e4c..13c92b216 100644
--- a/firmware/baseband/touch_dma.hpp
+++ b/firmware/baseband/touch_dma.hpp
@@ -32,8 +32,6 @@ namespace dma {
 using sample_t = uint32_t;
 using buffer_t = buffer_t<sample_t>;
 
-using Handler = void (*)();
-
 void init();
 
 void allocate();