diff --git a/modules/fatfs/zfs_ffsystem.c b/modules/fatfs/zfs_ffsystem.c
index 6f4d134f798b3f..f4f2c9003723fd 100644
--- a/modules/fatfs/zfs_ffsystem.c
+++ b/modules/fatfs/zfs_ffsystem.c
@@ -10,6 +10,8 @@
  * https://github.com/zephyrproject-rtos/fatfs/blob/master/option/ffsystem.c
  */
 
+#include <zephyr/kernel.h>
+
 #include <ff.h>
 
 #if FF_USE_LFN == 3	/* Dynamic memory allocation */