diff --git a/config/example.json b/config/example.json
index bd770c8293..3743096c8d 100644
--- a/config/example.json
+++ b/config/example.json
@@ -31,7 +31,6 @@
       "*"
     ],
     "jscomp_off": [
-      "unnecessaryCasts",
       "useOfGoogBase",
       "lintChecks",
       "analyzerChecks",
diff --git a/config/examples-all.json b/config/examples-all.json
index eef3640831..b278885837 100644
--- a/config/examples-all.json
+++ b/config/examples-all.json
@@ -31,7 +31,6 @@
       "*"
     ],
     "jscomp_off": [
-      "unnecessaryCasts",
       "useOfGoogBase",
       "lintChecks",
       "analyzerChecks"
diff --git a/config/ol.json b/config/ol.json
index eb542af685..3e527cc313 100644
--- a/config/ol.json
+++ b/config/ol.json
@@ -22,7 +22,6 @@
       "*"
     ],
     "jscomp_off": [
-      "unnecessaryCasts",
       "useOfGoogBase",
       "lintChecks",
       "analyzerChecks"