diff --git a/BUILD.gn b/BUILD.gn
index 5f7f66c765d5..466fac63cce2 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -44,10 +44,6 @@ declare_args() {
   # Enable slow dchecks.
   v8_enable_slow_dchecks = false
 
-  # Indicate if valgrind was fetched as a custom deps to make it available on
-  # swarming.
-  v8_has_valgrind = false
-
   # Interpreted regexp engine exists as platform-independent alternative
   # based where the regular expression is compiled to a bytecode.
   v8_interpreted_regexp = false
diff --git a/gni/isolate.gni b/gni/isolate.gni
index c2c025ce0c19..e6d166c46032 100644
--- a/gni/isolate.gni
+++ b/gni/isolate.gni
@@ -101,11 +101,6 @@ template("v8_isolate_run") {
       } else {
         use_snapshot = "false"
       }
-      if (v8_has_valgrind) {
-        has_valgrind = "1"
-      } else {
-        has_valgrind = "0"
-      }
 
       # Note, all paths will be rebased in isolate_driver.py to be relative to
       # the isolate file.
@@ -137,7 +132,7 @@ template("v8_isolate_run") {
         "--config-variable",
         "gcmole=0",
         "--config-variable",
-        "has_valgrind=$has_valgrind",
+        "has_valgrind=0",
         "--config-variable",
         "icu_use_data_file_flag=$icu_use_data_file_flag",
         "--config-variable",
diff --git a/infra/mb/mb_config.pyl b/infra/mb/mb_config.pyl
index fa4da999f8ec..79d5b480c203 100644
--- a/infra/mb/mb_config.pyl
+++ b/infra/mb/mb_config.pyl
@@ -544,7 +544,8 @@
     },
 
     'valgrind': {
-      'gn_args': 'v8_has_valgrind=true',
+      # TODO(machenbach): Add this to gn.
+      'gn_args': 'has_valgrind=true',
       'gyp_defines': 'has_valgrind=1',
     },