diff --git a/src/main/target/NUCLEOH743/target.c b/src/main/target/NUCLEOH743/target.c
index 0ea3955765..27112ef619 100644
--- a/src/main/target/NUCLEOH743/target.c
+++ b/src/main/target/NUCLEOH743/target.c
@@ -21,6 +21,7 @@
 #include <stdint.h>
 
 #include "platform.h"
+#include "drivers/io_def.h"
 #include "drivers/io.h"
 
 #include "drivers/dma.h"
diff --git a/src/test/unit/timer_definition_unittest.include/drivers/io.h b/src/test/unit/timer_definition_unittest.include/drivers/io.h
index e69de29bb2..3f1396a224 100644
--- a/src/test/unit/timer_definition_unittest.include/drivers/io.h
+++ b/src/test/unit/timer_definition_unittest.include/drivers/io.h
@@ -0,0 +1 @@
+#define IO_TAG(pinid) DEFIO_TAG(pinid)