diff --git a/arch/sim/src/nuttx-names.dat b/arch/sim/src/nuttx-names.dat
index 2ab3c2932b..33d93e93ef 100644
--- a/arch/sim/src/nuttx-names.dat
+++ b/arch/sim/src/nuttx-names.dat
@@ -84,6 +84,7 @@ pthread_testcancel NXpthread_testcancel
 pthread_yield  NXpthread_yield
 ptsname        NXptsname
 ptsname_r      NXptsname_r
+putenv         NXputenv
 puts           NXputs
 read           NXread
 readdir        NXreaddir