diff --git a/.github/workflows/on_push.yaml b/.github/workflows/on_push.yaml
index 2d40cf97..1e3eba21 100644
--- a/.github/workflows/on_push.yaml
+++ b/.github/workflows/on_push.yaml
@@ -1,5 +1,5 @@
 name: Lint
-on: push
+on: [push, pull_request]
 
 jobs:
   test:
diff --git a/src/layer/S1GRDEOCloudLayer.ts b/src/layer/S1GRDEOCloudLayer.ts
index cf10e33a..d97967e4 100644
--- a/src/layer/S1GRDEOCloudLayer.ts
+++ b/src/layer/S1GRDEOCloudLayer.ts
@@ -99,7 +99,7 @@ export class S1GRDEOCloudLayer extends AbstractSentinelHubV1OrV2Layer {
   }
 
   protected getFindTilesAdditionalParameters(): Record<string, any> {
-    const result = {
+    const result: Record<string, any> = {
       productType: 'GRD',
       acquisitionMode: this.acquisitionMode,
       polarization: this.polarization,