diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index 3d70246..d896457 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -793,7 +793,7 @@
 			  jiffies + msecs_to_jiffies(pstore_update_ms));
 }
 
-void __init pstore_choose_compression(void)
+static void __init pstore_choose_compression(void)
 {
 	const struct pstore_zbackend *step;