diff --git a/src/p_ceiling.cpp b/src/p_ceiling.cpp
index 32e5d62be..e90dd2096 100644
--- a/src/p_ceiling.cpp
+++ b/src/p_ceiling.cpp
@@ -214,6 +214,12 @@ DCeiling::DCeiling (sector_t *sec, double speed1, double speed2, int silent)
 	m_Speed = m_Speed1 = speed1;
 	m_Speed2 = speed2;
 	m_Silent = silent;
+	m_BottomHeight = 0;
+	m_TopHeight = 0;
+	m_Direction = 0;
+	m_Texture = FNullTextureID();
+	m_Tag = 0;
+	m_OldDirection = 0;
 }
 
 //============================================================================