diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index bcd1bbd..fba8c72 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -406,7 +406,7 @@
 		goto fail_init_fprz;
 
 	if (!cxt->przs && !cxt->cprz && !cxt->fprz) {
-		pr_err("memory size too small, minimum is %lu\n",
+		pr_err("memory size too small, minimum is %zu\n",
 			cxt->console_size + cxt->record_size +
 			cxt->ftrace_size);
 		goto fail_cnt;