diff --git a/include/settings/settings.h b/include/settings/settings.h
index d7d8b52d5c5..2874227fad6 100644
--- a/include/settings/settings.h
+++ b/include/settings/settings.h
@@ -567,7 +567,7 @@ int settings_name_next(const char *name, const char **next);
  *
  * @return 0 on success, non-zero on failure.
  */
-int settings_runtime_set(const char *name, void *data, size_t len);
+int settings_runtime_set(const char *name, const void *data, size_t len);
 
 /**
  * Get a value corresponding to a key from a module handler.
diff --git a/subsys/settings/src/settings_runtime.c b/subsys/settings/src/settings_runtime.c
index 6aa1e45c8bf..bfed1323e88 100644
--- a/subsys/settings/src/settings_runtime.c
+++ b/subsys/settings/src/settings_runtime.c
@@ -11,7 +11,7 @@
 #include "settings_priv.h"
 
 struct read_cb_arg {
-	void *data;
+	const void *data;
 	size_t len;
 };
 
@@ -23,7 +23,7 @@ static ssize_t settings_runtime_read_cb(void *cb_arg, void *data, size_t len)
 	return MIN(arg->len, len);
 }
 
-int settings_runtime_set(const char *name, void *data, size_t len)
+int settings_runtime_set(const char *name, const void *data, size_t len)
 {
 	struct settings_handler_static *ch;
 	const char *name_key;