diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c
index 287286ddf7dce..0fdfcdd9d880c 100644
--- a/arch/powerpc/kernel/security.c
+++ b/arch/powerpc/kernel/security.c
@@ -252,7 +252,7 @@ ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, c
 
 static enum stf_barrier_type stf_enabled_flush_types;
 static bool no_stf_barrier;
-bool stf_barrier;
+static bool stf_barrier;
 
 static int __init handle_no_stf_barrier(char *p)
 {