diff --git a/doc/qa/test-guidelines.md b/doc/qa/test-guidelines.md
index 7064bfbdc..4bab1304e 100644
--- a/doc/qa/test-guidelines.md
+++ b/doc/qa/test-guidelines.md
@@ -171,7 +171,7 @@ When in doubt, add the minimal unit tests plus one integration test that reprodu
 
 ## Deterministic patterns to avoid flaky tests
 
-1. **For activities unit tests, prefer returned state from [`ExecuteActivityAsync`](../../test/unit/Elsa.Activities.UnitTests/Helpers/ActivityTestHelper.cs).** Always inspect on the returned context — it is deterministic for synchronous workflows.
+1. **For activity unit tests, prefer returned state from [`ExecuteActivityAsync`](../../test/unit/Elsa.Activities.UnitTests/Helpers/ActivityTestHelper.cs).** Always inspect on the returned context — it is deterministic for synchronous workflows.
 2. **Resume bookmarks explicitly.** Do not wait for external schedulers — call the engine's resume/trigger APIs in your test to continue execution.
 3. **For integration tests, Locate instances deterministically.** Use an instance id returned by [`RunAsync`](../../src/modules/Elsa.Workflows.Core/Contracts/IWorkflowRunner.cs) or attach a `CorrelationId` test variable and query [`IWorkflowInstanceStore.FindByCorrelationIdAsync(...)`](../../src/modules/Elsa.Workflows.Management/Contracts/IWorkflowInstanceStore.cs). Avoid using "latest" queries.