diff --git a/src/prefs/media/Media.h b/src/prefs/media/Media.h
index d867400ff7..73c9003165 100644
--- a/src/prefs/media/Media.h
+++ b/src/prefs/media/Media.h
@@ -18,7 +18,7 @@
 #define __MEDIA_H__
 
 // Constants ------------------------------------------------------------------------------------------------- //
-const char *APP_SIGNATURE = "application/x-vnd.haiku.Media";  // Application Signature and Title
+const char *APP_SIGNATURE = "application/x-vnd.Haiku.MediaPrefs";  // Application Signature
 
 #include <Application.h>
 #include "MediaWindow.h"
diff --git a/src/prefs/media/media.rdef b/src/prefs/media/media.rdef
index 3724781298..93735539d1 100644
--- a/src/prefs/media/media.rdef
+++ b/src/prefs/media/media.rdef
@@ -1,4 +1,16 @@
 
+resource app_signature "application/x-vnd.Haiku.MediaPrefs";
+
+resource app_version
+{
+	short_info = "Media", 
+    long_info  = "Haiku Media Preferences"
+};
+
+resource app_flags B_SINGLE_LAUNCH;
+
+resource file_types message;
+
 resource large_icon
 {
 	$"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00FFFFFFFFFFFFFFFFFFFFFFFFFFFF"
@@ -54,15 +66,3 @@ resource mini_icon
 	$"FFFFFFFFFFFF002B2F00FF0404040F0F"
 	$"FFFFFFFFFFFFFF00000E0F0F0F0FFFFF"
 };
-
-resource file_types message;
-
-resource app_signature "application/x-vnd.haiku.Media";
-
-resource app_version
-{
-	short_info = "OBOS-Media", 
-    long_info  = "OpenBeOS version of Media"
-};
-
-resource app_flags B_SINGLE_LAUNCH;
diff --git a/src/prefs/sounds/HApp.cpp b/src/prefs/sounds/HApp.cpp
index f3dbd92c24..e77115bb33 100644
--- a/src/prefs/sounds/HApp.cpp
+++ b/src/prefs/sounds/HApp.cpp
@@ -17,7 +17,7 @@
 #include "HApp.h"
 #include "HWindow.h"
 
-#define APP_SIG "application/x-vnd.OBOS-Sounds"
+#define APP_SIG "application/x-vnd.Haiku.SoundsPrefs"
 
 /***********************************************************
  * Constructor
diff --git a/src/prefs/sounds/Sounds.rdef b/src/prefs/sounds/Sounds.rdef
index 5d22fbbef9..23ab48bd58 100644
--- a/src/prefs/sounds/Sounds.rdef
+++ b/src/prefs/sounds/Sounds.rdef
@@ -1,4 +1,16 @@
 
+resource app_signature "application/x-vnd.Haiku.SoundsPrefs";
+
+resource app_version
+{
+	short_info = "Sounds", 
+    long_info  = "Haiku Sounds Preferences"
+};
+
+resource app_flags B_SINGLE_LAUNCH;
+
+resource file_types message;
+
 resource large_icon
 {
 	$"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000FFFFFFFFFFFFFFFFFFFFFF"
@@ -54,15 +66,3 @@ resource mini_icon
 	$"FF002B2F00FFFFFFFFFFFFFF0F0F0FFF"
 	$"FFFF00000E0F0F0F0FFFFFFFFFFFFFFF"
 };
-
-resource file_types message;
-
-resource app_signature "application/x-vnd.OBOS-Sounds";
-
-resource app_version
-{
-	short_info = "OBOS-Sounds", 
-    long_info  = "OpenBeOS version of Sounds"
-};
-
-resource app_flags B_SINGLE_LAUNCH;