diff --git a/wadsrc/static/compatibility.txt b/wadsrc/static/compatibility.txt
index 9275eec68..e11ba449b 100644
--- a/wadsrc/static/compatibility.txt
+++ b/wadsrc/static/compatibility.txt
@@ -619,3 +619,10 @@ CA3773ED313E8899311F3DD0CA195A68 // e3m6
 	setwalltexture 343 front top MOSSRCK1
 	setwalltexture 370 front top MOSSRCK1
 }
+5E3FCFDE78310BB89F92B1626A47D0AD // heretic.wad E4M7
+{
+	// Missing textures
+	setwalltexture 1274 front top CSTLRCK
+	setwalltexture 1277 back top CSTLRCK
+	setwalltexture 1278 front top CSTLRCK
+}