diff --git a/karma.conf.js b/karma.conf.js
index fdceab411f..0176a32d10 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -17,7 +17,7 @@ module.exports = function (config) {
     singleRun: true,
     karmaTypescriptConfig: {
       bundlerOptions: {
-        entrypoints: /.*\.browser\.spec\.ts$/,
+        entrypoints: /^.*[^(node)]\.spec\.ts$/,
       },
       coverageOptions: {
         instrumentation: false,
diff --git a/src/lib/waku.spec.ts b/src/lib/waku.node.spec.ts
similarity index 100%
rename from src/lib/waku.spec.ts
rename to src/lib/waku.node.spec.ts
diff --git a/src/lib/waku_light_push/index.spec.ts b/src/lib/waku_light_push/index.node.spec.ts
similarity index 100%
rename from src/lib/waku_light_push/index.spec.ts
rename to src/lib/waku_light_push/index.node.spec.ts
diff --git a/src/lib/waku_message/index.spec.ts b/src/lib/waku_message/index.node.spec.ts
similarity index 100%
rename from src/lib/waku_message/index.spec.ts
rename to src/lib/waku_message/index.node.spec.ts
diff --git a/src/lib/waku_relay/index.spec.ts b/src/lib/waku_relay/index.node.spec.ts
similarity index 100%
rename from src/lib/waku_relay/index.spec.ts
rename to src/lib/waku_relay/index.node.spec.ts
diff --git a/src/lib/waku_store/index.spec.ts b/src/lib/waku_store/index.node.spec.ts
similarity index 100%
rename from src/lib/waku_store/index.spec.ts
rename to src/lib/waku_store/index.node.spec.ts
diff --git a/src/test_utils/log_file.spec.ts b/src/test_utils/log_file.node.spec.ts
similarity index 100%
rename from src/test_utils/log_file.spec.ts
rename to src/test_utils/log_file.node.spec.ts
diff --git a/src/test_utils/nim_waku.spec.ts b/src/test_utils/nim_waku.node.spec.ts
similarity index 100%
rename from src/test_utils/nim_waku.spec.ts
rename to src/test_utils/nim_waku.node.spec.ts