diff --git a/drivers/staging/android/persistent_ram.c b/drivers/staging/android/persistent_ram.c
index cb536c9b53b..35cc95bffec 100644
--- a/drivers/staging/android/persistent_ram.c
+++ b/drivers/staging/android/persistent_ram.c
@@ -297,7 +297,7 @@ int notrace persistent_ram_write(struct persistent_ram_zone *prz,
 	size_t start;
 
 	if (unlikely(prz->buffer->sig != PERSISTENT_RAM_SIG))
-		return EINVAL;
+		return -EINVAL;
 
 	if (unlikely(c > prz->buffer_size)) {
 		s += c - prz->buffer_size;