diff --git a/src/add-ons/kernel/bus_managers/firewire/fwohcireg.h b/src/add-ons/kernel/bus_managers/firewire/fwohcireg.h
index 674479dbf7..bcc40a7733 100644
--- a/src/add-ons/kernel/bus_managers/firewire/fwohcireg.h
+++ b/src/add-ons/kernel/bus_managers/firewire/fwohcireg.h
@@ -55,19 +55,19 @@
 #define		FW_DEVICE_UPD72870	(0x00cd << 16)
 #define		FW_DEVICE_UPD72873	(0x00e7 << 16)
 #define		FW_DEVICE_UPD72874	(0x00f2 << 16)
-#define		FW_DEVICE_TITSB22	(0x8009 << 16)
-#define		FW_DEVICE_TITSB23	(0x8019 << 16)
-#define		FW_DEVICE_TITSB26	(0x8020 << 16)
-#define		FW_DEVICE_TITSB43	(0x8021 << 16)
-#define		FW_DEVICE_TITSB43A	(0x8023 << 16)
-#define		FW_DEVICE_TITSB43AB23	(0x8024 << 16)
-#define		FW_DEVICE_TITSB82AA2	(0x8025 << 16)
-#define		FW_DEVICE_TITSB43AB21	(0x8026 << 16)
-#define		FW_DEVICE_TIPCI4410A	(0x8017 << 16)
-#define		FW_DEVICE_TIPCI4450	(0x8011 << 16)
-#define		FW_DEVICE_TIPCI4451	(0x8027 << 16)
-#define		FW_DEVICE_CXD1947	(0x8009 << 16)
-#define		FW_DEVICE_CXD3222	(0x8039 << 16)
+#define		FW_DEVICE_TITSB22	(0x8009U << 16)
+#define		FW_DEVICE_TITSB23	(0x8019U << 16)
+#define		FW_DEVICE_TITSB26	(0x8020U << 16)
+#define		FW_DEVICE_TITSB43	(0x8021U << 16)
+#define		FW_DEVICE_TITSB43A	(0x8023U << 16)
+#define		FW_DEVICE_TITSB43AB23	(0x8024U << 16)
+#define		FW_DEVICE_TITSB82AA2	(0x8025U << 16)
+#define		FW_DEVICE_TITSB43AB21	(0x8026U << 16)
+#define		FW_DEVICE_TIPCI4410A	(0x8017U << 16)
+#define		FW_DEVICE_TIPCI4450	(0x8011U << 16)
+#define		FW_DEVICE_TIPCI4451	(0x8027U << 16)
+#define		FW_DEVICE_CXD1947	(0x8009U << 16)
+#define		FW_DEVICE_CXD3222	(0x8039U << 16)
 #define		FW_DEVICE_VT6306	(0x3044 << 16)
 #define		FW_DEVICE_R5C551	(0x0551 << 16)
 #define		FW_DEVICE_R5C552	(0x0552 << 16)