diff --git a/src/add-ons/kernel/drivers/graphics/neomagic/driver.c b/src/add-ons/kernel/drivers/graphics/neomagic/driver.c
index fe75ff2c2a..fd4e29093d 100644
--- a/src/add-ons/kernel/drivers/graphics/neomagic/driver.c
+++ b/src/add-ons/kernel/drivers/graphics/neomagic/driver.c
@@ -5,7 +5,7 @@
 	Other authors:
 	Mark Watson;
 	Apsed;
-	Rudolf Cornelissen 5/2002-1/2006.
+	Rudolf Cornelissen 5/2002-4/2006.
 */
 
 /* standard kernel driver stuff */
@@ -39,7 +39,7 @@
 
 #define MAX_DEVICES	  8
 
-#define DEVICE_FORMAT "%04X_%04X_%02X%02X%02X" // apsed
+#define DEVICE_FORMAT "%04x_%04x_%02x%02x%02x" // apsed
 
 /* Tell the kernel what revision of the driver API we support */
 int32	api_version = B_CUR_DRIVER_API_VERSION; // apsed, was 2, is 2 in R5
diff --git a/src/add-ons/kernel/drivers/graphics/skeleton/driver.c b/src/add-ons/kernel/drivers/graphics/skeleton/driver.c
index 82207ce633..15e2ce2fd1 100644
--- a/src/add-ons/kernel/drivers/graphics/skeleton/driver.c
+++ b/src/add-ons/kernel/drivers/graphics/skeleton/driver.c
@@ -4,7 +4,7 @@
 
 	Other authors:
 	Mark Watson;
-	Rudolf Cornelissen 3/2002-11/2004.
+	Rudolf Cornelissen 3/2002-4/2006.
 */
 
 /* standard kernel driver stuff */
@@ -36,7 +36,7 @@
 
 #define MAX_DEVICES	  8
 
-#define DEVICE_FORMAT "%04X_%04X_%02X%02X%02X" // apsed
+#define DEVICE_FORMAT "%04x_%04x_%02x%02x%02x" // apsed
 
 /* Tell the kernel what revision of the driver API we support */
 int32	api_version = B_CUR_DRIVER_API_VERSION; // apsed, was 2, is 2 in R5
diff --git a/src/add-ons/kernel/drivers/graphics/via/driver.c b/src/add-ons/kernel/drivers/graphics/via/driver.c
index 7cb40b9c40..f19ca81868 100644
--- a/src/add-ons/kernel/drivers/graphics/via/driver.c
+++ b/src/add-ons/kernel/drivers/graphics/via/driver.c
@@ -4,7 +4,7 @@
 
 	Other authors:
 	Mark Watson;
-	Rudolf Cornelissen 3/2002-9/2005.
+	Rudolf Cornelissen 3/2002-4/2006.
 */
 
 /* standard kernel driver stuff */
@@ -36,7 +36,7 @@
 
 #define MAX_DEVICES	  8
 
-#define DEVICE_FORMAT "%04X_%04X_%02X%02X%02X" // apsed
+#define DEVICE_FORMAT "%04x_%04x_%02x%02x%02x" // apsed
 
 /* Tell the kernel what revision of the driver API we support */
 int32	api_version = B_CUR_DRIVER_API_VERSION; // apsed, was 2, is 2 in R5