diff --git a/include/environment.h b/include/environment.h
index 5cd7ecf..95e75e7 100644
--- a/include/environment.h
+++ b/include/environment.h
@@ -60,6 +60,12 @@
 {
 	return 0;
 }
+
+static inline int export(const char *var)
+{
+	return -EINVAL;
+}
+
 #endif
 
 int env_pop_context(void);