diff --git a/sbin/snail.nv_pwr_off b/sbin/snail.nv_pwr_off
index 132291f..4bac3ef 100755
--- a/sbin/snail.nv_pwr_off
+++ b/sbin/snail.nv_pwr_off
@@ -2,13 +2,13 @@
 
 TRIES=8
 
-lsmod | grep '^nouveau ' >/dev/null && modprobe -rf nouveau &>/dev/null
+lsmod | grep '^nouveau ' >/dev/null && rmmod -f nouveau &>/dev/null
 
 # Trying bbswitch method
 if [ -f /proc/acpi/bbswitch ]; then
 	let tries=$TRIES
 	while [ 0 -lt $tries ]; do
-		modprobe -r nvidia \
+		rmmod nvidia \
 		&& echo 'OFF' > /proc/acpi/bbswitch \
 		&& exit 0
 
@@ -25,77 +25,77 @@ if [ -f /proc/acpi/call ]; then
 	while [ 0 -lt $tries ]; do
 		case "$model" in
 			M11XR2)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.P0P2.PEGP.NVOP 0 0x100 0x1A {255,255,255,255}' > /proc/acpi/call \
 				&& echo '\_SB.PCI0.P0P2.PEGP._PS3' > /proc/acpi/call \
 				&& exit 0
 			;;
 			1015PN)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\OSGS 0x03' > /proc/acpi/call \
 				&& exit 0
 			;;
 			1215N)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.P0P4.GFX0._DSM {0xF8,0xD8,0x86,0xA4,0xDA,0x0B,0x1B,0x47,0xA7,0x2B,0x60,0x42,0xA6,0xB5,0xBE,0xE0} 0x100 0x1A {0x1,0x0,0x0,0x3}' > /proc/acpi/call \
 				&& echo '\_SB.PCI0.P0P4.GFX0._PS3' > /proc/acpi/call \
 				&& exit 0
 			;;
 			K42Jc|K52Jc|N53Jf|N53Jg|N71Jv|N73Jf|P52Jc|PL80Jt|U30Jc|U33Jc|U35Jc|U36Jc|UL80Jt)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.PEG1.GFX0.DOFF' > /proc/acpi/call \
 				&& exit 0
 			;;
 			N61Jv|N73Sv)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.PEGR.GFX0.DOFF' > /proc/acpi/call \
 				&& exit 0
 			;;
 			P31Jg)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.PEG1.GFX0._PS3' > /proc/acpi/call \
 				&& exit 0
 			;;
 			U43Jc)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.RP00.VGA._DSM {0xF8,0xD8,0x86,0xA4,0xDA,0x0B,0x1B,0x47,0xA7,0x2B,0x60,0x42,0xA6,0xB5,0xBE,0xE0} 0x100 0x1A {0x1,0x0,0x0,0x3}' > /proc/acpi/call \
 				&& echo '\_SB.PCI0.RP00.VGA._PS3' > /proc/acpi/call \
 				&& exit 0
 			;;
 			UL30Vt)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.P0P1.VGA._OFF' > /proc/acpi/call \
 				&& exit 0
 			;;
 			E6420)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.PEG0.VID._OFF' > /proc/acpi/call \
 				&& exit 0
 			;;
 			InspironN5110|XPSL702X)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.PEG0.PEGP._DSM {0xF8,0xD8,0x86,0xA4,0xDA,0x0B,0x1B,0x47,0xA7,0x2B,0x60,0x42,0xA6,0xB5,0xBE,0xE0} 0x100 0x1A {0x1,0x0,0x0,0x3}' > /proc/acpi/call \
 				&& echo '\_SB.PCI0.PEG0.PEGP._PS3' > /proc/acpi/call \
 				&& exit 0
 			;;
 			Vostro3300|Vostro3500)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.P0P1.PEGP._OFF' > /proc/acpi/call \
 				&& exit 0
 			;;
 			XPS15)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.PEG0.PEGP._OFF' > /proc/acpi/call \
 				&& exit 0
 			;;
 			ThinkPadT410)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.PEG.VID._PS3' > /proc/acpi/call \
 				&& echo '\_SB.PCI0.PEG.VID._OFF' > /proc/acpi/call \
 				&& exit 0
 			;;
 			ThinkPadT420)
-				modprobe -r nvidia \
+				rmmod nvidia \
 				&& echo '\_SB.PCI0.PEG.VID._DSM {0xF8,0xD8,0x86,0xA4,0xDA,0x0B,0x1B,0x47,0xA7,0x2B,0x60,0x42,0xA6,0xB5,0xBE,0xE0} 0x100 0x1A {0x1,0x0,0x0,0x3}' > /proc/acpi/call \
 				&& echo '\_SB.PCI0.PEG.VID._PS3' > /proc/acpi/call \
 				&& exit 0
@@ -114,7 +114,7 @@ fi
 if [ -f /sys/kernel/debug/vgaswitcheroo/switch ]; then
 	let tries=$TRIES
 	while [ 0 -lt $tries ]; do
-		modprobe -r nvidia \
+		rmmod nvidia \
 		&& echo 'OFF' > /sys/kernel/debug/vgaswitcheroo/switch \
 		&& exit 0