diff --git a/packages/binding-coap/.eslintrc.json b/packages/binding-coap/.eslintrc.json
index c4237119e..70b9f134b 100644
--- a/packages/binding-coap/.eslintrc.json
+++ b/packages/binding-coap/.eslintrc.json
@@ -1,3 +1,6 @@
 {
-    "extends": "../../.eslintrc.js"
+    "extends": "../../.eslintrc.js",
+    "rules": {
+        "@typescript-eslint/strict-boolean-expressions": ["error"]
+    }
 }
diff --git a/packages/binding-coap/test/tsconfig.json b/packages/binding-coap/test/tsconfig.json
index 786b1b616..c2cefa10e 100644
--- a/packages/binding-coap/test/tsconfig.json
+++ b/packages/binding-coap/test/tsconfig.json
@@ -1,7 +1,8 @@
 {
     "extends": "../tsconfig.json",
     "compilerOptions": {
-        "rootDir": ".."
+        "rootDir": "..",
+        "strictNullChecks": true
     },
     "include": ["*.ts", "**/*.ts", "../src/**/*.ts"]
 }