diff --git a/src/gl/renderer/gl_renderer.h b/src/gl/renderer/gl_renderer.h
index ed2c523f28..b784e74fdb 100644
--- a/src/gl/renderer/gl_renderer.h
+++ b/src/gl/renderer/gl_renderer.h
@@ -79,7 +79,8 @@ enum
 {
 	DM_MAINVIEW,
 	DM_OFFSCREEN,
-	DM_PORTAL
+	DM_PORTAL,
+	DM_SKYPORTAL
 };
 
 class FGLRenderer
diff --git a/src/gl/scene/gl_portal.cpp b/src/gl/scene/gl_portal.cpp
index 4cf8b9e7ba..967f6b3fc1 100644
--- a/src/gl/scene/gl_portal.cpp
+++ b/src/gl/scene/gl_portal.cpp
@@ -655,7 +655,7 @@ void GLSkyboxPortal::DrawContents()
 	SaveMapSection();
 	currentmapsection[mapsection >> 3] |= 1 << (mapsection & 7);
 
-	GLRenderer->DrawScene(DM_PORTAL);
+	GLRenderer->DrawScene(DM_SKYPORTAL);
 	portal->mFlags &= ~PORTSF_INSKYBOX;
 	inskybox = false;
 	gl_RenderState.SetDepthClamp(oldclamp);
diff --git a/src/gl/scene/gl_scene.cpp b/src/gl/scene/gl_scene.cpp
index a3c896b276..1e4b7ac585 100644
--- a/src/gl/scene/gl_scene.cpp
+++ b/src/gl/scene/gl_scene.cpp
@@ -491,7 +491,7 @@ void FGLRenderer::DrawScene(int drawmode)
 	{
 		ssao_portals_available = 0;
 	}
-	else if (ssao_portals_available > 0)
+	else if (drawmode == DM_PORTAL && ssao_portals_available > 0)
 	{
 		applySSAO = true;
 		ssao_portals_available--;