diff --git a/qrenderdoc/Code/CaptureContext.cpp b/qrenderdoc/Code/CaptureContext.cpp
index 43b287781..563a4608f 100644
--- a/qrenderdoc/Code/CaptureContext.cpp
+++ b/qrenderdoc/Code/CaptureContext.cpp
@@ -1095,6 +1095,9 @@ void CaptureContext::LoadCaptureThreaded(const QString &captureFile, const Repla
     m_PostloadProgress = 1.0f;
   });
 
+  if(m_FrameInfo.containsAnnotations)
+    ANALYTIC_SET(CaptureFeatures.CustomAnnotations, true);
+
   QThread::msleep(20);
 
   QDateTime today = QDateTime::currentDateTimeUtc();
diff --git a/qrenderdoc/Code/Interface/Analytics.cpp b/qrenderdoc/Code/Interface/Analytics.cpp
index 491f4a34d..f03457cd9 100644
--- a/qrenderdoc/Code/Interface/Analytics.cpp
+++ b/qrenderdoc/Code/Interface/Analytics.cpp
@@ -314,6 +314,7 @@ static struct AnalyticsDocumentation
     DOCUMENT_ANALYTIC(MultiGPU, "Did any capture make use of multiple GPUs?");
     DOCUMENT_ANALYTIC(D3D12Bundle, "Did any D3D12 capture use bundles?");
     DOCUMENT_ANALYTIC(DXILShaders, "Did any D3D12 capture use DXIL shaders?");
+    DOCUMENT_ANALYTIC(CustomAnnotations, "Did any capture use RenderDoc's custom annotations?");
   } DOCUMENT_ANALYTIC_SECTION(CaptureFeatures, "Capture API Usage");
 } docs;
 
@@ -323,7 +324,7 @@ void AnalyticsSerialise(Analytics &serdb, QVariantMap &values, AnalyticsSerialis
 
 // only check this on 64-bit as it is different on 32-bit
 #if QT_POINTER_SIZE == 8 && defined(Q_OS_WIN32)
-  static_assert(sizeof(Analytics) == 148, "Sizeof Analytics has changed - update serialisation.");
+  static_assert(sizeof(Analytics) == 149, "Sizeof Analytics has changed - update serialisation.");
 #endif
 
   QString doc;
@@ -432,6 +433,7 @@ void AnalyticsSerialise(Analytics &serdb, QVariantMap &values, AnalyticsSerialis
     ANALYTIC_SERIALISE(CaptureFeatures.MultiGPU);
     ANALYTIC_SERIALISE(CaptureFeatures.D3D12Bundle);
     ANALYTIC_SERIALISE(CaptureFeatures.DXILShaders);
+    ANALYTIC_SERIALISE(CaptureFeatures.CustomAnnotations);
   }
 
   if(type == AnalyticsSerialiseType::Documenting)
diff --git a/qrenderdoc/Code/Interface/Analytics.h b/qrenderdoc/Code/Interface/Analytics.h
index f57c516aa..181a5fe31 100644
--- a/qrenderdoc/Code/Interface/Analytics.h
+++ b/qrenderdoc/Code/Interface/Analytics.h
@@ -242,6 +242,7 @@ struct Analytics
     bool MultiGPU = false;
     bool D3D12Bundle = false;
     bool DXILShaders = false;
+    bool CustomAnnotations = false;
   } CaptureFeatures;
 };