diff --git a/src/flags/flag-definitions.h b/src/flags/flag-definitions.h
index 65d1637c25..145360e551 100644
--- a/src/flags/flag-definitions.h
+++ b/src/flags/flag-definitions.h
@@ -740,11 +740,6 @@ DEFINE_BOOL(trace_baseline_concurrent_compilation, false,
 // Internalize into a shared string table in the shared isolate
 DEFINE_BOOL(shared_string_table, false, "internalize strings into shared table")
 DEFINE_IMPLICATION(harmony_struct, shared_string_table)
-DEFINE_BOOL(shared_string_table_using_shared_space, false,
-            "internalize strings into shared table")
-DEFINE_IMPLICATION(shared_string_table_using_shared_space, shared_string_table)
-DEFINE_IMPLICATION(shared_string_table_using_shared_space, shared_space)
-DEFINE_IMPLICATION(harmony_struct, shared_string_table)
 DEFINE_BOOL(
     always_use_string_forwarding_table, false,
     "use string forwarding table instead of thin strings for all strings")
diff --git a/tools/clusterfuzz/foozzie/v8_fuzz_flags.json b/tools/clusterfuzz/foozzie/v8_fuzz_flags.json
index c7e39668c8..33a5724d62 100644
--- a/tools/clusterfuzz/foozzie/v8_fuzz_flags.json
+++ b/tools/clusterfuzz/foozzie/v8_fuzz_flags.json
@@ -32,6 +32,5 @@
   [0.1, "--turbo-force-mid-tier-regalloc"],
   [0.0001, "--simulate-errors"],
   [0.1, "--minor-mc"],
-  [0.1, "--shared-string-table"],
-  [0.1, "--shared-string-table-using-shared-space"]
+  [0.1, "--shared-string-table"]
 ]
diff --git a/tools/clusterfuzz/trials/clusterfuzz_trials_config.json b/tools/clusterfuzz/trials/clusterfuzz_trials_config.json
index b3c2ccc885..6704481290 100644
--- a/tools/clusterfuzz/trials/clusterfuzz_trials_config.json
+++ b/tools/clusterfuzz/trials/clusterfuzz_trials_config.json
@@ -27,7 +27,6 @@
     {"app_args": "--no-wasm-generic-wrapper", "app_name": "d8", "probability": 0.1},
     {"app_args": "--regexp-interpret-all", "app_name": "d8", "probability": 0.1},
     {"app_args": "--shared-string-table", "app_name": "d8", "probability": 0.1},
-    {"app_args": "--shared-string-table-using-shared-space", "app_name": "d8", "probability": 0.1},
     {"app_args": "--simulate-errors", "app_name": "d8", "probability": 0.001},
     {"app_args": "--stress-compaction-random", "app_name": "d8", "probability": 0.05},
     {"app_args": "--stress-concurrent-inlining", "app_name": "d8", "probability": 0.25, "contradicts": ["--assert-types", "--jitless"]},
diff --git a/tools/testrunner/testproc/fuzzer.py b/tools/testrunner/testproc/fuzzer.py
index 616e85f206..8907bbae55 100644
--- a/tools/testrunner/testproc/fuzzer.py
+++ b/tools/testrunner/testproc/fuzzer.py
@@ -46,7 +46,6 @@ EXTRA_FLAGS = [
     (0.1, '--regexp-tier-up-ticks=10'),
     (0.1, '--regexp-tier-up-ticks=100'),
     (0.1, '--shared-string-table'),
-    (0.1, '--shared-string-table-using-shared-space'),
     (0.1, '--stress-background-compile'),
     (0.1, '--stress-flush-code'),
     (0.1, '--stress-lazy-source-positions'),