diff --git a/types/react-icon-base/tsconfig.json b/types/react-icon-base/tsconfig.json
index 4e98b45572..d176f7f467 100644
--- a/types/react-icon-base/tsconfig.json
+++ b/types/react-icon-base/tsconfig.json
@@ -6,7 +6,7 @@
             "dom"
         ],
         "noImplicitAny": true,
-        "noImplicitThis": false,
+        "noImplicitThis": true,
         "strictNullChecks": true,
         "strictFunctionTypes": true,
         "baseUrl": "../",
@@ -22,4 +22,4 @@
         "index.d.ts",
         "react-icon-base-tests.tsx"
     ]
-}
\ No newline at end of file
+}