diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index 4ef6fe9236..831d91febe 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -6,6 +6,7 @@
 - Fix: [#9574] Text overflow in scenario objective window when using CJK languages.
 - Fix: [#9625] Show correct cost in scenery selection.
 - Fix: [#9669] The tile inspector shortcut key does not work with debugging tools disabled.
+- Fix: [#9717] Scroll bars do not render correctly when using OpenGL renderer.
 
 0.2.3 (2019-07-10)
 ------------------------------------------------------------------------
diff --git a/src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp b/src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp
index 6fa92e46e6..85623819a4 100644
--- a/src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp
+++ b/src/openrct2-ui/drawing/engines/opengl/OpenGLDrawingEngine.cpp
@@ -569,7 +569,7 @@ void OpenGLDrawingContext::FillRect(uint32_t colour, int32_t left, int32_t top,
     if (colour & 0x1000000)
     {
         // cross-pattern
-        command.flags = DrawRectCommand::FLAG_CROSS_HATCH;
+        command.flags |= DrawRectCommand::FLAG_CROSS_HATCH;
     }
     else if (colour & 0x2000000)
     {