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-rw-r--r--src/env/clearenv.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/env/clearenv.c b/src/env/clearenv.c
index da187752..2e275b43 100644
--- a/src/env/clearenv.c
+++ b/src/env/clearenv.c
@@ -1,5 +1,6 @@
 #define _GNU_SOURCE
 #include <stdlib.h>
+#include <unistd.h>
 #include "libc.h"
 
 static void dummy(char *old, char *new) {}