diff --git a/programs/develop/fasm/1.73/system.inc b/programs/develop/fasm/1.73/system.inc
index bec7d76269..ae7aa8d3b2 100644
--- a/programs/develop/fasm/1.73/system.inc
+++ b/programs/develop/fasm/1.73/system.inc
@@ -422,9 +422,10 @@ make_fullpaths:
 	mov	esi,[esp]
 
 	cmp	byte[esi],'/'
-	jne	@f
+	je	abs_path
 	cmp	byte[esi],'\'
 	jne	@f
+    abs_path:
 	mov	edi,fullpath_open
 
     @@: