diff --git a/libraries/AP_HAL/AP_HAL_Boards.h b/libraries/AP_HAL/AP_HAL_Boards.h
index 9d9dd5c67c..5ae4318755 100644
--- a/libraries/AP_HAL/AP_HAL_Boards.h
+++ b/libraries/AP_HAL/AP_HAL_Boards.h
@@ -257,6 +257,10 @@
 #define USE_LIBC_REALLOC 1
 #endif
 
+#ifndef AP_HAL_SHARED_DMA_ENABLED
+#define AP_HAL_SHARED_DMA_ENABLED 1
+#endif
+
 #ifndef HAL_ENABLE_THREAD_STATISTICS
 #define HAL_ENABLE_THREAD_STATISTICS 0
 #endif