diff --git a/src/OpenGl/OpenGl_FrameBuffer.cxx b/src/OpenGl/OpenGl_FrameBuffer.cxx
index 2fdf7bb188..a3fa54f032 100644
--- a/src/OpenGl/OpenGl_FrameBuffer.cxx
+++ b/src/OpenGl/OpenGl_FrameBuffer.cxx
@@ -168,6 +168,7 @@ OpenGl_FrameBuffer::OpenGl_FrameBuffer()
   myGlColorRBufferId (NO_RENDERBUFFER),
   myGlDepthRBufferId (NO_RENDERBUFFER),
   myIsOwnBuffer  (false),
+  myIsOwnDepth  (false),
   myDepthStencilTexture (new OpenGl_Texture())
 {
   myColorFormats.Append (GL_RGBA8);