diff --git a/src/gl/scene/gl_portal.cpp b/src/gl/scene/gl_portal.cpp
index 4737f518d..a186d4ff0 100644
--- a/src/gl/scene/gl_portal.cpp
+++ b/src/gl/scene/gl_portal.cpp
@@ -83,6 +83,8 @@ EXTERN_CVAR(Bool, gl_portals)
 EXTERN_CVAR(Bool, gl_noquery)
 EXTERN_CVAR(Int, r_mirror_recursions)
 
+extern bool r_showviewer;
+
 TArray<GLPortal *> GLPortal::portals;
 TArray<float> GLPortal::planestack;
 int GLPortal::recursion;
@@ -311,6 +313,7 @@ bool GLPortal::Start(bool usestencil, bool doquery)
 	savedviewactor=GLRenderer->mViewActor;
 	savedviewangle=viewangle;
 	savedviewarea=in_area;
+	savedshowviewer = r_showviewer;
 
 	NextPortal = GLRenderer->mCurrentPortal;
 	GLRenderer->mCurrentPortal = NULL;	// Portals which need this have to set it themselves
@@ -382,6 +385,7 @@ void GLPortal::End(bool usestencil)
 		viewangle=savedviewangle;
 		GLRenderer->mViewActor=savedviewactor;
 		in_area=savedviewarea;
+		r_showviewer = savedshowviewer;
 		GLRenderer->SetupView(viewx, viewy, viewz, viewangle, !!(MirrorFlag & 1), !!(PlaneMirrorFlag & 1));
 
 		{
@@ -440,6 +444,7 @@ void GLPortal::End(bool usestencil)
 		viewangle=savedviewangle;
 		GLRenderer->mViewActor=savedviewactor;
 		in_area=savedviewarea;
+		r_showviewer = savedshowviewer;
 		GLRenderer->SetupView(viewx, viewy, viewz, viewangle, !!(MirrorFlag&1), !!(PlaneMirrorFlag&1));
 
 		// This draws a valid z-buffer into the stencil's contents to ensure it
@@ -806,6 +811,7 @@ void GLPlaneMirrorPortal::DrawContents()
 	viewz = 2*planez - viewz;
 	GLRenderer->mViewActor = NULL;
 	PlaneMirrorMode = ksgn(origin->c);
+	r_showviewer = true;
 
 	validcount++;
 
@@ -922,6 +928,7 @@ void GLMirrorPortal::DrawContents()
 										linedef->v2->x, linedef->v2->y) - startang;
 
 	GLRenderer->mViewActor = NULL;
+	r_showviewer = true;
 
 	validcount++;
 
diff --git a/src/gl/scene/gl_portal.h b/src/gl/scene/gl_portal.h
index 5a2af3807..177c2230e 100644
--- a/src/gl/scene/gl_portal.h
+++ b/src/gl/scene/gl_portal.h
@@ -117,6 +117,7 @@ private:
 	angle_t savedviewangle;
 	AActor * savedviewactor;
 	area_t savedviewarea;
+	bool savedshowviewer;
 	GLPortal *NextPortal;
 	TArray<BYTE> savedmapsection;
 	TArray<unsigned int> mPrimIndices;