diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
index ab4b0e4e126..1ed6f97f985 100644
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@@ -1285,8 +1285,8 @@ static_assert(COUNT(arm) == LOGICAL_AXES, "AXIS_RELATIVE_MODES must contain " _L
 
     #if HAS_BLTOUCH_HS_MODE
       constexpr char hs[] = STRINGIFY(BLTOUCH_HS_MODE);
-      static_assert(!(strcmp(hs, "1") && strcmp(hs, "true") && strcmp(hs, "0") && strcmp(hs, "false")), \
-        "BLTOUCH_HS_MODE must now be defined as true or false, indicating the default state.");
+      static_assert(!(strcmp(hs, "1") && strcmp(hs, "0x1") && strcmp(hs, "true") && strcmp(hs, "0") && strcmp(hs, "0x0") && strcmp(hs, "false")), \
+         "BLTOUCH_HS_MODE must now be defined as true or false, indicating the default state.");
       #ifdef BLTOUCH_HS_EXTRA_CLEARANCE
         static_assert(BLTOUCH_HS_EXTRA_CLEARANCE >= 0, "BLTOUCH_HS_MODE requires BLTOUCH_HS_EXTRA_CLEARANCE >= 0.");
       #endif