diff --git a/src/p_local.h b/src/p_local.h
index cb404eb8c..95d7541a8 100644
--- a/src/p_local.h
+++ b/src/p_local.h
@@ -242,7 +242,7 @@ inline int P_PointOnLineSide (fixed_t x, fixed_t y, const line_t *line)
 {
 	extern int P_VanillaPointOnLineSide(fixed_t x, fixed_t y, const line_t* line);
 
-	return compatflags2 & COMPATF2_POINTONLINE
+	return i_compatflags2 & COMPATF2_POINTONLINE
 		? P_VanillaPointOnLineSide(x, y, line)
 		: DMulScale32 (y-line->v1->y, line->dx, line->v1->x-x, line->dy) > 0;
 }
@@ -260,7 +260,7 @@ inline int P_PointOnDivlineSide (fixed_t x, fixed_t y, const divline_t *line)
 {
 	extern int P_VanillaPointOnDivlineSide(fixed_t x, fixed_t y, const divline_t* line);
 
-	return (compatflags2 & COMPATF2_POINTONLINE)
+	return (i_compatflags2 & COMPATF2_POINTONLINE)
 		? P_VanillaPointOnDivlineSide(x, y, line)
 		: (DMulScale32 (y-line->y, line->dx, line->x-x, line->dy) > 0);
 }
diff --git a/wadsrc/static/compatibility.txt b/wadsrc/static/compatibility.txt
index 6cbe36af4..3c41f871f 100644
--- a/wadsrc/static/compatibility.txt
+++ b/wadsrc/static/compatibility.txt
@@ -320,8 +320,7 @@ F481922F4881F74760F3C0437FD5EDD0 // map03
 
 7C1913DEE396BA26CFF22A0E9369B7D2 // Nuke Mine, e1m2
 {
-	clearlinespecial 1107
-	clearlinespecial 1108
+	pointonline
 }
 
 5B862477519B21B30059A466F2FF6460 // Khorus, map08
@@ -401,3 +400,8 @@ D0139194F7817BF06F3988DFC47DB38D // Whispers of Satan map29
 {
 	nopassover
 }
+
+D7F6E9F08C39A17026349A04F8C0B0BE // Return to Hadron, e1m9
+{
+	pointonline
+}