diff --git a/Common/Gfx/Util/WICBitmapDIB.h b/Common/Gfx/Util/WICBitmapDIB.h
index 641f1e19..38d7932c 100644
--- a/Common/Gfx/Util/WICBitmapDIB.h
+++ b/Common/Gfx/Util/WICBitmapDIB.h
@@ -16,8 +16,8 @@
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
 
-#ifndef RM_GFX_WICBITMAPDIB_H_
-#define RM_GFX_WICBITMAPDIB_H_
+#ifndef RM_GFX_UTIL_WICBITMAPDIB_H_
+#define RM_GFX_UTIL_WICBITMAPDIB_H_
 
 #include <Windows.h>
 #include <GdiPlus.h>
diff --git a/Common/Gfx/Util/WICBitmapLockDIB.h b/Common/Gfx/Util/WICBitmapLockDIB.h
index 35fc3443..0222a5fc 100644
--- a/Common/Gfx/Util/WICBitmapLockDIB.h
+++ b/Common/Gfx/Util/WICBitmapLockDIB.h
@@ -16,8 +16,8 @@
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
 
-#ifndef RM_GFX_WICBITMAPLOCKDIB_H_
-#define RM_GFX_WICBITMAPLOCKDIB_H_
+#ifndef RM_GFX_UTIL_WICBITMAPLOCKDIB_H_
+#define RM_GFX_UTIL_WICBITMAPLOCKDIB_H_
 
 #include <Windows.h>
 #include <GdiPlus.h>
diff --git a/Common/Gfx/Util/WICBitmapLockGDIP.h b/Common/Gfx/Util/WICBitmapLockGDIP.h
index c33f3b69..a2ac6ede 100644
--- a/Common/Gfx/Util/WICBitmapLockGDIP.h
+++ b/Common/Gfx/Util/WICBitmapLockGDIP.h
@@ -16,8 +16,8 @@
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
 
-#ifndef RM_GFX_WICBITMAPLOCKGDIP_H_
-#define RM_GFX_WICBITMAPLOCKGDIP_H_
+#ifndef RM_GFX_UTIL_WICBITMAPLOCKGDIP_H_
+#define RM_GFX_UTIL_WICBITMAPLOCKGDIP_H_
 
 #include <Windows.h>
 #include <GdiPlus.h>