diff --git a/src/main.tal b/src/main.tal
index 3f4f505..77a20b3 100644
--- a/src/main.tal
+++ b/src/main.tal
@@ -439,7 +439,7 @@ BRK
 		.Mouse/y DEI2 .tileview/y1 LDZ2 --
 		8// SWP2 8// SWP2
 		GET-POSITION ADD-POSITIONS
-		#00 .Mouse/state DEI #10 = ,&do-erase-zoom JCN
+		#00 .Mouse/state DEI #01 > ,&do-erase-zoom JCN
 			POP .settings/color LDZ
 			&do-erase-zoom
 		;put-pixel JSR2
@@ -544,13 +544,13 @@ BRK
 		DUP #00 = .Mouse/state DEI #01 = #0101 !! ,&no-shiftup JCN
 			;op-shift-tile-up ;run-selection JSR2
 			SET-STATE &no-shiftup
-		DUP #00 = .Mouse/state DEI #10 = #0101 !! ,&no-shiftdown JCN
+		DUP #00 = .Mouse/state DEI #01 > #0101 !! ,&no-shiftdown JCN
 			;op-shift-tile-down ;run-selection JSR2
 			SET-STATE &no-shiftdown
 		DUP #01 = .Mouse/state DEI #01 = #0101 !! ,&no-shiftright JCN
 			;op-shift-tile-right ;run-selection JSR2
 			SET-STATE &no-shiftright
-		DUP #01 = .Mouse/state DEI #10 = #0101 !! ,&no-shiftleft JCN
+		DUP #01 = .Mouse/state DEI #01 > #0101 !! ,&no-shiftleft JCN
 			;op-shift-tile-left ;run-selection JSR2
 			SET-STATE &no-shiftleft
 		POP
@@ -563,7 +563,7 @@ BRK
 	.Mouse/y DEI2 .zoomview/y1 LDZ2 -- 4//
 	.settings/focus LDZ2 ++
 	( detect erase )
-	#00 .Mouse/state DEI #10 = ,&do-erase JCN
+	#00 .Mouse/state DEI #01 > ,&do-erase JCN
 		POP .settings/color LDZ &do-erase
 	STH
 	OVR2 OVR2
@@ -630,7 +630,7 @@ BRK
 		#0f SWP [ 40* SFT ] AND
 		STHr #00 =
 		.Mouse/x DEI2 .colorview/x1 LDZ2 -- 2// NIP
-		( clamp to #0f ) DUP #10 = -
+		( clamp to #0f ) DUP #01 > -
 		SWP [ 40* SFT ] +
 	RTN