diff --git a/buckifier/targets_cfg.py b/buckifier/targets_cfg.py
index 56cf77b6a8..38037b250d 100644
--- a/buckifier/targets_cfg.py
+++ b/buckifier/targets_cfg.py
@@ -17,7 +17,7 @@ load(":defs.bzl", "test_binary")
 
 REPO_PATH = package_name() + "/"
 
-ROCKSDB_COMPILER_FLAGS = [
+ROCKSDB_COMPILER_FLAGS_0 = [
     "-fno-builtin-memcmp",
     # Needed to compile in fbcode
     "-Wno-expansion-to-defined",
@@ -35,7 +35,7 @@ ROCKSDB_EXTERNAL_DEPS = [
     ("zstd", None, "zstd"),
 ]
 
-ROCKSDB_OS_DEPS = [
+ROCKSDB_OS_DEPS_0 = [
     (
         "linux",
         ["third-party//numa:numa", "third-party//liburing:uring", "third-party//tbb:tbb"],
@@ -46,7 +46,7 @@ ROCKSDB_OS_DEPS = [
     ),
 ]
 
-ROCKSDB_OS_PREPROCESSOR_FLAGS = [
+ROCKSDB_OS_PREPROCESSOR_FLAGS_0 = [
     (
         "linux",
         [
@@ -114,18 +114,18 @@ is_opt_mode = build_mode.startswith("opt")
 
 # -DNDEBUG is added by default in opt mode in fbcode. But adding it twice
 # doesn't harm and avoid forgetting to add it.
-ROCKSDB_COMPILER_FLAGS += (["-DNDEBUG"] if is_opt_mode else [])
+ROCKSDB_COMPILER_FLAGS = ROCKSDB_COMPILER_FLAGS_0 + (["-DNDEBUG"] if is_opt_mode else [])
 
 sanitizer = read_config("fbcode", "sanitizer")
 
 # Do not enable jemalloc if sanitizer presents. RocksDB will further detect
 # whether the binary is linked with jemalloc at runtime.
-ROCKSDB_OS_PREPROCESSOR_FLAGS += ([(
+ROCKSDB_OS_PREPROCESSOR_FLAGS = ROCKSDB_OS_PREPROCESSOR_FLAGS_0 + ([(
     "linux",
     ["-DROCKSDB_JEMALLOC"],
 )] if sanitizer == "" else [])
 
-ROCKSDB_OS_DEPS += ([(
+ROCKSDB_OS_DEPS = ROCKSDB_OS_DEPS_0 + ([(
     "linux",
     ["third-party//jemalloc:headers"],
 )] if sanitizer == "" else [])