diff --git a/quantum/action_util.h b/quantum/action_util.h
index 72b4c56d013..c9d27ef92dc 100644
--- a/quantum/action_util.h
+++ b/quantum/action_util.h
@@ -36,8 +36,8 @@ typedef union {
         bool right_shift : 1;
         bool right_alt : 1;
         bool right_gui : 1;
-    } PACKED;
-} mod_t;
+    };
+} PACKED mod_t;
 _Static_assert(sizeof(mod_t) == sizeof(uint8_t), "Invalid size for 'mod_t'");
 
 extern report_keyboard_t *keyboard_report;
diff --git a/quantum/led.h b/quantum/led.h
index 669e93e1944..85819b20470 100644
--- a/quantum/led.h
+++ b/quantum/led.h
@@ -19,6 +19,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include <stdint.h>
 #include <stdbool.h>
+#include "util.h"
 
 /* FIXME: Add doxygen comments here. */
 
@@ -36,7 +37,8 @@ typedef union {
         bool    kana : 1;
         uint8_t reserved : 3;
     };
-} led_t;
+} PACKED led_t;
+_Static_assert(sizeof(led_t) == sizeof(uint8_t), "Invalid size for 'led_t'");
 
 void led_set(uint8_t usb_led);