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-rw-r--r--nuttx/sched/env_putenv.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/nuttx/sched/env_putenv.c b/nuttx/sched/env_putenv.c
index 65c3d4c03..68674023a 100644
--- a/nuttx/sched/env_putenv.c
+++ b/nuttx/sched/env_putenv.c
@@ -41,6 +41,7 @@
#ifndef CONFIG_DISABLE_ENVIRON
+#include <stdlib.h>
#include <sched.h>
#include <string.h>
#include <errno.h>