diff --git a/src/f_finale.c b/src/f_finale.c
index efc2a127..784d8204 100644
--- a/src/f_finale.c
+++ b/src/f_finale.c
@@ -973,7 +973,6 @@ static const char *credits[] = {
 	"Callum Dickinson",
 	"Scott \"Graue\" Feeney",
 	"Nathan \"Jazz\" Giroux",
-	"Vivian \"toaster\" Grannell",
 	"Thomas \"Shadow Hog\" Igoe",
 	"\"Monster\" Iestyn Jealous",
 	"Ronald \"Furyhunter\" Kinard", // The SDL2 port
@@ -987,6 +986,7 @@ static const char *credits[] = {
 	"\"chi.miru\"", // Red's secret weapon, the REAL reason slopes exist (also helped port drawing code from ZDoom)
 	"Andrew \"orospakr\" Clunis",
 	"Gregor \"Oogaland\" Dick",
+	"Vivian \"toaster\" Grannell",
 	"Julio \"Chaos Zero 64\" Guir",
 	"\"Kalaron\"", // Coded some of Sryder13's collection of OpenGL fixes, especially fog
 	"Matthew \"Shuffle\" Marsalko",
diff --git a/src/p_slopes.c b/src/p_slopes.c
index 936af442..d939fee9 100644
--- a/src/p_slopes.c
+++ b/src/p_slopes.c
@@ -249,8 +249,8 @@ void P_SpawnSlope_Line(int linenum)
 	boolean backceil   = (special == 711 || special == 712 || special == 703);
 
 	UINT8 flags = 0; // Slope flags
-	/*if (line->flags & ML_NOSONIC)
-		flags |= SL_NOPHYSICS;  - disabled for 2.1*/
+	if (line->flags & ML_NOSONIC)
+		flags |= SL_NOPHYSICS;
 	if (line->flags & ML_NOTAILS)
 		flags |= SL_NODYNAMIC;
 	if (line->flags & ML_NOKNUX)
@@ -685,8 +685,8 @@ void P_ResetDynamicSlopes(void) {
 					size_t which = lines[i].special;
 
 					UINT8 flags = SL_VERTEXSLOPE;
-					/*if (line->flags & ML_NOSONIC)
-						flags |= SL_NOPHYSICS;  - disabled for 2.1*/
+					if (lines[i].flags & ML_NOSONIC)
+						flags |= SL_NOPHYSICS;
 					if (!(lines[i].flags & ML_NOTAILS))
 						flags |= SL_NODYNAMIC;