diff --git a/firmware/os/core/bl.c b/firmware/os/core/bl.c
index 6e46aed..706a749 100644
--- a/firmware/os/core/bl.c
+++ b/firmware/os/core/bl.c
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include <variant/variant.h>
+
 #include <bl.h>
 
 #include <plat/cmsis.h>