diff --git a/programs/develop/fasm/trunk/expressi.inc b/programs/develop/fasm/trunk/expressi.inc
index 5cf3b0d472..0784d1a7f0 100644
--- a/programs/develop/fasm/trunk/expressi.inc
+++ b/programs/develop/fasm/trunk/expressi.inc
@@ -2266,7 +2266,8 @@ preevaluate_logical_expression:
 	inc	esi
 	jmp	skip_logical_value
       negation_skipped:
-	cmp	byte [esi],'{'
+	mov	al,[esi]
+	cmp	al,'{'
 	jne	skip_simple_logical_value
 	inc	esi
 	xchg	al,[logical_value_wrapping]
@@ -2290,6 +2291,7 @@ preevaluate_logical_expression:
 	clc
 	ret
       wrongly_structured_logical_expression:
+	pop	eax
 	stc
 	ret
       skip_simple_logical_value:
@@ -2310,7 +2312,7 @@ preevaluate_logical_expression:
 	jne	skip_logical_value_symbol
 	sub	[logical_value_parentheses],1
 	jnc	skip_logical_value_symbol
-	cmp	[logical_value_wrapping],al
+	cmp	[logical_value_wrapping],'{'
 	jne	skip_logical_value_symbol
 	jmp	logical_value_skipped
       skip_logical_value_internal_parenthesis:
diff --git a/programs/develop/fasm/trunk/preproce.inc b/programs/develop/fasm/trunk/preproce.inc
index bedbe62492..6a755c8157 100644
--- a/programs/develop/fasm/trunk/preproce.inc
+++ b/programs/develop/fasm/trunk/preproce.inc
@@ -5,12 +5,11 @@
 
 preprocessor:
 	mov	edi,characters
-	mov	ecx,100h
 	xor	al,al
       make_characters_table:
 	stosb
 	inc	al
-	loop	make_characters_table
+	jnz	make_characters_table
 	mov	esi,characters+'a'
 	mov	edi,characters+'A'
 	mov	ecx,26
diff --git a/programs/develop/fasm/trunk/version.inc b/programs/develop/fasm/trunk/version.inc
index f43d7fc876..ca049c2d3c 100644
--- a/programs/develop/fasm/trunk/version.inc
+++ b/programs/develop/fasm/trunk/version.inc
@@ -33,7 +33,7 @@
 ; cannot simply be copied and put under another distribution licence
 ; (including the GNU Public Licence).
 
-VERSION_STRING equ "1.67.17"
+VERSION_STRING equ "1.67.18"
 
 VERSION_MAJOR = 1
 VERSION_MINOR = 67