diff --git a/renderdoc/driver/d3d11/d3d11_device.cpp b/renderdoc/driver/d3d11/d3d11_device.cpp
index 7dcbfc6e8..dbd1bdccb 100644
--- a/renderdoc/driver/d3d11/d3d11_device.cpp
+++ b/renderdoc/driver/d3d11/d3d11_device.cpp
@@ -2953,7 +2953,7 @@ HRESULT WrappedID3D11Device::Present(IDXGISwapChain *swap, UINT SyncInterval, UI
 			{
 				vector<KeyButton> keys = RenderDoc::Inst().GetCaptureKeys();
 
-				string overlayText = "";
+				string overlayText = "D3D11. ";
 
 				for(size_t i=0; i < keys.size(); i++)
 				{
diff --git a/renderdoc/driver/gl/gl_driver.cpp b/renderdoc/driver/gl/gl_driver.cpp
index 9ab64c0ba..468984545 100644
--- a/renderdoc/driver/gl/gl_driver.cpp
+++ b/renderdoc/driver/gl/gl_driver.cpp
@@ -954,7 +954,7 @@ void WrappedOpenGL::Present(void *windowHandle)
 			{
 				vector<KeyButton> keys = RenderDoc::Inst().GetCaptureKeys();
 
-				string overlayText = "";
+				string overlayText = "OpenGL. ";
 
 				for(size_t i=0; i < keys.size(); i++)
 				{