diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h
index 9bb77d3ed6e0c5a35f8c77c0fb20821a237984ea..c2256d74654333b9103fab444c4e318e2c7d422a 100644
--- a/include/linux/nvmem-consumer.h
+++ b/include/linux/nvmem-consumer.h
@@ -74,7 +74,7 @@ static inline void nvmem_cell_put(struct nvmem_cell *cell)
 {
 }
 
-static inline char *nvmem_cell_read(struct nvmem_cell *cell, size_t *len)
+static inline void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len)
 {
 	return ERR_PTR(-ENOSYS);
 }