diff --git a/grafproc.asm b/grafproc.asm
index 028cd36..2779518 100644
--- a/grafproc.asm
+++ b/grafproc.asm
@@ -1129,16 +1129,13 @@ FallingRight
 	bit PreviousFall	; bit 6 - left
 	bvs EndRightFall
     ; we finish falling right if the tank reached the edge of the screen
-    clc
-    lda XtanksTableL,x
-    adc #$08 ; we'll check right side of the char
-    sta temp
     lda XtanksTableH,x
-    adc #0
-    sta temp+1
-    cpw temp #screenwidth-2	; 2 pixels correction due to a barrel wider than tank
-    bcs EndRightFall
-NotLeftEdge
+	cmp #>(screenwidth-8-2) ; 2 pixels correction due to a barrel wider than tank
+	bne @+
+    lda XtanksTableL,x
+	cmp #<(screenwidth-8-2) ; 2 pixels correction due to a barrel wider than tank
+@   bcs EndRightFall
+NotRightEdge
     ; tank is falling right - modify coorinates
     clc
     lda XtankstableL,x
@@ -1159,6 +1156,7 @@ FallingLeft
     lda XtanksTableL,x
 	cmp #3	; 2 pixels correction due to a barrel wider than tank
     bcc EndLeftFall
+NotLeftEdge
     ; tank is falling left - modify coorinates
     sec
     lda XtankstableL,x
@@ -1206,7 +1204,7 @@ DoNotDrawParachute
 ForceFallLeft
 	sta UnderTank1
 	sty UnderTank2
-	jne TankFallsX
+	jmp TankFallsX
 EndOfFall
     mva #1 Erase
 ;    ldx TankNr
diff --git a/scorch.asm b/scorch.asm
index 3ba0146..ea1722b 100644
--- a/scorch.asm
+++ b/scorch.asm
@@ -36,7 +36,7 @@
 ;we decided it must go in 'English' to let other people work on it
 
 .macro build
-	dta d"1.12" ; number of this build (3 bytes)
+	dta d"1.13" ; number of this build (3 bytes)
 .endm
 
     icl 'definitions.asm'
diff --git a/scorch.xex b/scorch.xex
index 9b7c9ef..1a25c25 100644
Binary files a/scorch.xex and b/scorch.xex differ