diff --git a/prelude/transitions/constraint_overrides.bzl b/prelude/transitions/constraint_overrides.bzl
index b260d858f220..8d8fbb62c195 100644
--- a/prelude/transitions/constraint_overrides.bzl
+++ b/prelude/transitions/constraint_overrides.bzl
@@ -8,6 +8,10 @@
 # NOTE: Currently, constraints can't be propagated via rule attrs and so need to be
 #       hard-coded here. We use a read_config to avoid hard-coding these repo-specific
 #       constraints into the prelude.
+#       The following configs must be set to use constraint_overrides.bzl:
+#         - buck2.platforms
+#         - buck2.constraints
+#         - buck2.passthrough_constraints
 
 def _platforms() -> list[str]:
     platforms = []
@@ -15,10 +19,6 @@ def _platforms() -> list[str]:
     platforms.extend(
         [platform.strip() for platform in config.split(",") if platform.strip()],
     )
-    config = read_root_config("buck2", "generated_platforms", "")
-    platforms.extend(
-        [platform.strip() for platform in config.split(",") if platform.strip()],
-    )
     return platforms
 
 def _constraints() -> list[str]:
@@ -27,10 +27,6 @@ def _constraints() -> list[str]:
     constraints.extend(
         [constraint.strip() for constraint in config.split(",") if constraint.strip()],
     )
-    config = read_root_config("buck2", "generated_constraints", "")
-    constraints.extend(
-        [constraint.strip() for constraint in config.split(",") if constraint.strip()],
-    )
     return constraints
 
 _passthrough_constraints_val = read_root_config("buck2", "passthrough_constraints", "")