diff --git a/headers/private/system/vm_defs.h b/headers/private/system/vm_defs.h
index c5f405014b..81230d5f4f 100644
--- a/headers/private/system/vm_defs.h
+++ b/headers/private/system/vm_defs.h
@@ -31,9 +31,7 @@
 //	flags region in the protection field.
 #define B_OVERCOMMITTING_AREA	0x1000
 #define B_SHARED_AREA			0x2000
-#define B_KERNEL_AREA			0x4000
-	// Usable from userland according to its protection flags, but the area
-	// itself is not deletable, resizable, etc from userland.
+/* 0x4000 was B_KERNEL_AREA until hrev52545 */
 
 #define B_USER_AREA_FLAGS		(B_USER_PROTECTION | B_OVERCOMMITTING_AREA)
 #define B_KERNEL_AREA_FLAGS \
diff --git a/src/kits/debugger/user_interface/util/UiUtils.cpp b/src/kits/debugger/user_interface/util/UiUtils.cpp
index 848981f3a8..5e65d72c8c 100644
--- a/src/kits/debugger/user_interface/util/UiUtils.cpp
+++ b/src/kits/debugger/user_interface/util/UiUtils.cpp
@@ -230,7 +230,6 @@ UiUtils::AreaProtectionFlagsToString(uint32 protection, BString& _output)
 	ADD_AREA_FLAG_IF_PRESENT(B_OVERCOMMITTING_AREA, protection, _output, "o",
 		"");
 	ADD_AREA_FLAG_IF_PRESENT(B_SHARED_AREA, protection, "S", _output, "");
-	ADD_AREA_FLAG_IF_PRESENT(B_KERNEL_AREA, protection, "k", _output, "");
 
 	if (protection != 0) {
 		char buffer[32];
diff --git a/src/system/kernel/commpage.cpp b/src/system/kernel/commpage.cpp
index d895feb001..4aa05f6640 100644
--- a/src/system/kernel/commpage.cpp
+++ b/src/system/kernel/commpage.cpp
@@ -66,7 +66,7 @@ clone_commpage_area(team_id team, void** address)
 	if (*address == NULL)
 		*address = (void*)KERNEL_USER_DATA_BASE;
 	return vm_clone_area(team, "commpage", address,
-		B_RANDOMIZED_BASE_ADDRESS, B_READ_AREA | B_EXECUTE_AREA | B_KERNEL_AREA,
+		B_RANDOMIZED_BASE_ADDRESS, B_READ_AREA | B_EXECUTE_AREA,
 		REGION_PRIVATE_MAP, sCommPageArea, true);
 }