diff --git a/libsrc/common/labs.s b/libsrc/common/labs.s
index d73617b95..753e9f99d 100644
--- a/libsrc/common/labs.s
+++ b/libsrc/common/labs.s
@@ -1,14 +1,18 @@
 ;
 ; Ullrich von Bassewitz, 17.06.1998
 ;
-; long labs (long x);
+; long __fastcall__ labs (long val);
+; intmax_t __fastcall imaxabs (intmax_t val);
 ;
 
-	.export		_labs
-	.import		negeax, tsteax
+  	.export		_labs, _imaxabs
+  	.import		negeax
 	.importzp	sreg
 
-_labs: 	ldy	sreg+1		; test hi byte
+
+_labs:
+_imaxabs:
+        ldy	sreg+1		; test hi byte
   	bpl	L1
 	jmp	negeax 		; Negate if negative
 L1:    	rts