We need to include the NUL char

src/r_things.h

@@ -75,7 +75,7 @@ typedef struct
 
 	char realname[SKINNAMESIZE+1]; // Display name for level completion.
 	char hudname[SKINNAMESIZE+1]; // HUD name to display (officially exactly 5 characters long)
-	char charsel[8], face[8], superface[8]; // Arbitrarily named patch lumps
+	char charsel[9], face[9], superface[9]; // Arbitrarily named patch lumps
 
 	UINT8 ability; // ability definition
 	UINT8 ability2; // secondary ability definition