diff --git a/regression-tests/__snapshots__/regresion.test.js.snap b/regression-tests/__snapshots__/regresion.test.js.snap
index 7baa1d8..029d4c8 100644
--- a/regression-tests/__snapshots__/regresion.test.js.snap
+++ b/regression-tests/__snapshots__/regresion.test.js.snap
@@ -3186,6 +3186,22 @@ Array [
     "path": "./regression-tests/prefer-when-expression.yaml",
     "rule": "no-missing-resource",
   },
+  Object {
+    "level": "warning",
+    "loc": Object {
+      "endColumn": 13,
+      "endLine": 35,
+      "range": Array [
+        676,
+        714,
+      ],
+      "startColumn": 17,
+      "startLine": 34,
+    },
+    "message": "Task 'task-1' in PipelineRun 'prefer-when-expression-run' is guarded by condition(s) ('condition'). Conditions are deprecated, use WhenExpressions instead.",
+    "path": "./regression-tests/prefer-when-expression.yaml",
+    "rule": "prefer-when-expression",
+  },
   Object {
     "level": "error",
     "loc": Object {
diff --git a/src/rules/prefer-when-expression.ts b/src/rules/prefer-when-expression.ts
index 68a0eea..4970467 100644
--- a/src/rules/prefer-when-expression.ts
+++ b/src/rules/prefer-when-expression.ts
@@ -7,4 +7,18 @@ export default (docs, tekton, report) => {
       }
     }
   }
+
+  for (const triggerTemplate of Object.values<any>(tekton.triggerTemplates)) {
+    for (const crd of triggerTemplate.spec.resourcetemplates) {
+      if (crd.kind !== 'PipelineRun') continue;
+      const pipelineSpec = crd.spec.pipelineSpec;
+      if (!pipelineSpec || !pipelineSpec.tasks) continue;
+      for (const task of pipelineSpec.tasks) {
+        if (task.conditions) {
+          const guardedBy = task.conditions.map(condition => condition.conditionRef);
+          report(`Task '${task.name}' in PipelineRun '${crd.metadata.name}' is guarded by condition(s) ('${guardedBy.join(', ')}'). Conditions are deprecated, use WhenExpressions instead.`, task, 'conditions');
+        }
+      }
+    }
+  }
 };