diff --git a/sdk/xtdk/bltypes.h b/sdk/xtdk/bltypes.h
index 2ff7bd0..9f8b388 100644
--- a/sdk/xtdk/bltypes.h
+++ b/sdk/xtdk/bltypes.h
@@ -50,6 +50,7 @@ typedef EFI_STATUS (*PBL_BUILD_PAGE_MAP)(IN PXTBL_PAGE_MAPPING PageMap);
 typedef EFI_STATUS (*PBL_CLOSE_VOLUME)(IN PEFI_HANDLE VolumeHandle);
 typedef VOID (*PBL_CLEAR_CONSOLE_LINE)(IN ULONGLONG LineNo);
 typedef EFI_STATUS (*PBL_CLOSE_XT_PROTOCOL)(IN PEFI_HANDLE Handle, IN PEFI_GUID ProtocolGuid);
+typedef BOOLEAN (*PBL_CONFIG_GET_BOOLEAN_VALUE)(IN CONST PWCHAR ConfigName);
 typedef PWCHAR (*PBL_CONFIG_GET_VALUE)(IN CONST PWCHAR ConfigName);
 typedef VOID (*PBL_CONSOLE_CLEAR_SCREEN)();
 typedef VOID (*PBL_CONSOLE_DISABLE_CURSOR)();
@@ -346,6 +347,7 @@ typedef struct _XTBL_LOADER_PROTOCOL
     } Boot;
     struct
     {
+        PBL_CONFIG_GET_BOOLEAN_VALUE GetBooleanValue;
         PBL_CONFIG_GET_VALUE GetValue;
     } Config;
     struct
diff --git a/xtldr/protocol.c b/xtldr/protocol.c
index b3e31d1..873e0a9 100644
--- a/xtldr/protocol.c
+++ b/xtldr/protocol.c
@@ -873,6 +873,7 @@ BlpInstallXtLoaderProtocol()
     BlpLdrProtocol.Boot.InvokeProtocol = BlInvokeBootProtocol;
     BlpLdrProtocol.Boot.RegisterMenu = BlRegisterBootMenu;
     BlpLdrProtocol.Boot.RegisterProtocol = BlRegisterBootProtocol;
+    BlpLdrProtocol.Config.GetBooleanValue = BlGetConfigBooleanValue;
     BlpLdrProtocol.Config.GetValue = BlGetConfigValue;
     BlpLdrProtocol.Console.ClearLine = BlClearConsoleLine;
     BlpLdrProtocol.Console.ClearScreen = BlClearConsoleScreen;