diff --git a/core/modal_models/modes.c b/core/modal_models/modes.c
index eda031755..7e1c2493b 100644
--- a/core/modal_models/modes.c
+++ b/core/modal_models/modes.c
@@ -44,6 +44,7 @@ THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "modes.h"
 #include "reactor.h"
 #include "reactor_common.h"
+#include "api/schedule.h"
 
 // Bit masks for the internally used flags on modes
 #define _LF_MODE_FLAG_MASK_ACTIVE        (1 << 0)