diff --git a/src/internal/m365/collection/drive/url_cache_test.go b/src/internal/m365/collection/drive/url_cache_test.go
index da6e5c732..62f2d2e30 100644
--- a/src/internal/m365/collection/drive/url_cache_test.go
+++ b/src/internal/m365/collection/drive/url_cache_test.go
@@ -184,6 +184,9 @@ func (suite *URLCacheIntegrationSuite) TestURLCacheBasic() {
 
 	// Validate that exactly 1 delta query was made by url cache
 	require.Equal(t, 1, uc.refreshCount)
+
+	// Validate that the prev delta base stays the same
+	require.Equal(t, du.URL, uc.prevDelta)
 }
 
 // ---------------------------------------------------------------------------