diff --git a/firmware/target/arm/system-pp502x.c b/firmware/target/arm/system-pp502x.c
index 277b1e9a0b..db6cae13d4 100644
--- a/firmware/target/arm/system-pp502x.c
+++ b/firmware/target/arm/system-pp502x.c
@@ -325,7 +325,7 @@ void system_init(void)
         DEV_INIT2      = 0x40000000;
 
         /* reset all allowed devices */
-        DEV_RS         = 0x3ffffef8;
+        DEV_RS         = 0x3dfffef8;
         DEV_RS2        = 0xffffffff;
         DEV_RS         = 0x00000000;
         DEV_RS2        = 0x00000000;
@@ -367,7 +367,7 @@ void system_init(void)
         DEV_INIT2      = 0x40000000;
 
         /* reset all allowed devices */
-        DEV_RS         = 0x3ffdfef8;
+        DEV_RS         = 0x3dfdfef8;
         DEV_RS2        = 0xffffffff;
         DEV_RS         = 0x00000000;
         DEV_RS2        = 0x00000000;