diff --git a/drivers/g-wolves/g-wolves.h b/drivers/g-wolves/g-wolves.h
index 520fc57..abe104c 100644
--- a/drivers/g-wolves/g-wolves.h
+++ b/drivers/g-wolves/g-wolves.h
@@ -71,6 +71,7 @@ struct REPORT_DPI_SETTINGS
     dpi_level_t levels[5];
     uint8_t zeros[23];
 } __attribute__((packed));
+_Static_assert(sizeof(struct REPORT_DPI_SETTINGS) == REPORT_MAX_SIZE, "Report DPI_SETTINGS not of right size");
 
 struct REPORT_UNKNOWN_0
 {
@@ -81,6 +82,7 @@ struct REPORT_UNKNOWN_0
 
     uint8_t zeros[REPORT_MAX_SIZE - sizeof(report_header_t) - 2];
 } __attribute__((packed));
+_Static_assert(sizeof(struct REPORT_UNKNOWN_0) == REPORT_MAX_SIZE, "Report UNKNOWN_0 not of right size");
 
 struct REPORT_UNKNOWN_1
 {
@@ -91,6 +93,7 @@ struct REPORT_UNKNOWN_1
 
     uint8_t zeros[REPORT_MAX_SIZE - sizeof(report_header_t) - 2];
 } __attribute__((packed));
+_Static_assert(sizeof(struct REPORT_UNKNOWN_1) == REPORT_MAX_SIZE, "Report UNKNOWN_1 not of right size");
 
 struct REPORT_CLICK_DEBOUNCE_SETTINGS
 {
@@ -104,6 +107,7 @@ struct REPORT_CLICK_DEBOUNCE_SETTINGS
 
     uint8_t zeros[REPORT_MAX_SIZE - 8];
 } __attribute__((packed));
+_Static_assert(sizeof(struct REPORT_CLICK_DEBOUNCE_SETTINGS) == REPORT_MAX_SIZE, "Report CLICK_DEBOUNCE_SETTINGS not of right size");
 
 struct REPORT_LIFT_OFF
 {
@@ -114,6 +118,7 @@ struct REPORT_LIFT_OFF
 
     uint8_t zeros[REPORT_MAX_SIZE - sizeof(report_header_t) - 1];
 } __attribute__((packed));
+_Static_assert(sizeof(struct REPORT_LIFT_OFF) == REPORT_MAX_SIZE, "Report LIFT_OFF not of right size");
 
 struct REPORT_ANGLE_SNAP
 {
@@ -124,6 +129,7 @@ struct REPORT_ANGLE_SNAP
 
     uint8_t zeros[REPORT_MAX_SIZE - sizeof(report_header_t) - 1];
 } __attribute__((packed));
+_Static_assert(sizeof(struct REPORT_ANGLE_SNAP) == REPORT_MAX_SIZE, "Report ANGLE_SNAP not of right size");
 
 struct REPORT_MOTION_SYNC
 {
@@ -133,6 +139,7 @@ struct REPORT_MOTION_SYNC
 
     uint8_t zeros[REPORT_MAX_SIZE - sizeof(report_header_t) - 1];
 } __attribute__((packed));
+_Static_assert(sizeof(struct REPORT_MOTION_SYNC) == REPORT_MAX_SIZE, "Report MOTION_SYNC not of right size");
 
 struct REPORT_UNKNOWN_6
 {
@@ -145,8 +152,9 @@ struct REPORT_UNKNOWN_6
     uint8_t value4;
     uint8_t value5;
 
-    uint8_t zeros[REPORT_MAX_SIZE - sizeof(report_header_t) - 5];
+    uint8_t zeros[REPORT_MAX_SIZE - sizeof(report_header_t) - 6];
 } __attribute__((packed));
+_Static_assert(sizeof(struct REPORT_UNKNOWN_6) == REPORT_MAX_SIZE, "Report UNKNOWN_6 not of right size");
 
 struct REPORT_BATTERY
 {
@@ -157,6 +165,7 @@ struct REPORT_BATTERY
 
     uint8_t zeros[REPORT_MAX_SIZE - sizeof(report_header_t) - 2];
 } __attribute__((packed));
+_Static_assert(sizeof(struct REPORT_BATTERY) == REPORT_MAX_SIZE, "Report BATTERY not of right size");
 
 struct REPORT_WIRELESS
 {
@@ -165,3 +174,4 @@ struct REPORT_WIRELESS
     uint8_t mouse_connected; // 0 if disconnected, else 1
     uint8_t zeros[REPORT_MAX_SIZE - sizeof(report_header_t) - 1];
 } __attribute__((packed));
+_Static_assert(sizeof(struct REPORT_WIRELESS) == REPORT_MAX_SIZE, "Report WIRELESS not of right size");