diff --git a/src/p_ceiling.cpp b/src/p_ceiling.cpp
index 9c5d693a0..8a0c8f9ef 100644
--- a/src/p_ceiling.cpp
+++ b/src/p_ceiling.cpp
@@ -253,7 +253,7 @@ bool P_CreateCeiling(sector_t *sec, DCeiling::ECeiling type, line_t *line, int t
 	// if ceiling already moving, don't start a second function on it
 	if (sec->PlaneMoving(sector_t::ceiling))
 	{
-		return NULL;
+		return false;
 	}
 	
 	// new door thinker
diff --git a/src/r_main.cpp b/src/r_main.cpp
index 1344ac453..f6a341f4e 100644
--- a/src/r_main.cpp
+++ b/src/r_main.cpp
@@ -693,7 +693,7 @@ void R_EnterPortal (PortalDrawseg* pds, int depth)
 	fixed_t starty = viewy;
 	fixed_t startz = viewz;
 	DVector3 savedpath[2] = { ViewPath[0], ViewPath[1] };
-	int savedvisibility = camera? camera->renderflags & RF_INVISIBLE : 0;
+	ActorRenderFlags savedvisibility = camera? camera->renderflags & RF_INVISIBLE : ActorRenderFlags::FromInt(0);
 
 	CurrentPortalUniq++;