diff --git a/src/flags/flag-definitions.h b/src/flags/flag-definitions.h
index 4a197d460d..ed361e3357 100644
--- a/src/flags/flag-definitions.h
+++ b/src/flags/flag-definitions.h
@@ -684,7 +684,6 @@ DEFINE_BOOL_READONLY(concurrent_sparkplug, false,
 #else
 DEFINE_BOOL(concurrent_sparkplug, false,
             "compile Sparkplug code in a background thread")
-DEFINE_IMPLICATION(concurrent_sparkplug, sparkplug)
 DEFINE_WEAK_IMPLICATION(future, concurrent_sparkplug)
 DEFINE_NEG_IMPLICATION(predictable, concurrent_sparkplug)
 DEFINE_NEG_IMPLICATION(single_threaded, concurrent_sparkplug)
diff --git a/tools/testrunner/local/variants.py b/tools/testrunner/local/variants.py
index f973b9d4d8..3feee7dfd3 100644
--- a/tools/testrunner/local/variants.py
+++ b/tools/testrunner/local/variants.py
@@ -15,6 +15,7 @@ ALL_VARIANT_FLAGS = {
   "experimental_regexp":  [["--default-to-experimental-regexp-engine"]],
   "jitless": [["--jitless"]],
   "sparkplug": [["--sparkplug"]],
+  "concurrent_sparkplug": [["--concurrent-sparkplug", "--sparkplug"]],
   "always_sparkplug": [[ "--always-sparkplug", "--sparkplug"]],
   "minor_mc": [["--minor-mc"]],
   "no_lfa": [["--no-lazy-feedback-allocation"]],
@@ -50,8 +51,8 @@ ALL_VARIANT_FLAGS = {
 # implications defined in flag-definitions.h.
 INCOMPATIBLE_FLAGS_PER_VARIANT = {
   "jitless": ["--opt", "--always-opt", "--liftoff", "--track-field-types",
-              "--validate-asm", "--sparkplug", "--always-sparkplug",
-              "--regexp-tier-up", "--no-regexp-interpret-all"],
+              "--validate-asm", "--sparkplug", "--concurrent-sparkplug",
+              "--always-sparkplug", "--regexp-tier-up", "--no-regexp-interpret-all"],
   "nooptimization": ["--always-opt"],
   "slow_path": ["--no-force-slow-path"],
   "stress_concurrent_allocation": ["--single-threaded-gc", "--predictable"],
@@ -70,6 +71,7 @@ INCOMPATIBLE_FLAGS_PER_VARIANT = {
              "--liftoff-only", "--wasm-speculative-inlining",
              "--wasm-dynamic-tiering"],
   "sparkplug": ["--jitless"],
+  "concurrent_sparkplug": ["--jitless"],
   "always_sparkplug": ["--jitless"],
   "code_serializer": ["--cache=after-execute", "--cache=full-code-cache",
                       "--cache=none"],