diff --git a/libsrc/common/putenv.s b/libsrc/common/putenv.s
index aec6d1b34..9584348f6 100644
--- a/libsrc/common/putenv.s
+++ b/libsrc/common/putenv.s
@@ -10,7 +10,7 @@
         .import _malloc, _free
         .import searchenv, copyenvptr
         .import __environ, __envcount, __envsize
-        .import seterrno, return0
+        .import __seterrno, return0
         .import ptr1:zp, ptr2:zp, ptr3:zp, tmp1:zp
 
         .include "errno.inc"
@@ -180,7 +180,7 @@ addentry:
 ; Error entries
 
 nomem:  lda     #ENOMEM
-error:	jsr	seterrno
+error:	jsr	__seterrno
 	lda	#$FF			; Return -1
 	tax
 	rts