diff --git a/lib/format_text/text_label.c b/lib/format_text/text_label.c
index 1f8325f0f..59e1c268f 100644
--- a/lib/format_text/text_label.c
+++ b/lib/format_text/text_label.c
@@ -660,7 +660,7 @@ static void _fmt_text_destroy(struct labeller *l)
 	free(l);
 }
 
-const struct label_ops _text_ops = {
+static const struct label_ops _text_ops = {
 	.can_handle = _text_can_handle,
 	.write = _text_write,
 	.read = _text_read,
diff --git a/lib/mm/memlock.c b/lib/mm/memlock.c
index 735cda8eb..a73da59bc 100644
--- a/lib/mm/memlock.c
+++ b/lib/mm/memlock.c
@@ -77,7 +77,7 @@ int memlock_count_daemon(void)
 
 static size_t _size_stack;
 static size_t _size_malloc_tmp;
-const size_t _size_malloc = 2000000;
+static const size_t _size_malloc = 2000000;
 
 static void *_malloc_mem = NULL;
 static int _mem_locked = 0;
diff --git a/tools/toollib.c b/tools/toollib.c
index 40fc3353a..080ee5429 100644
--- a/tools/toollib.c
+++ b/tools/toollib.c
@@ -461,7 +461,7 @@ const char *extract_vgname(struct cmd_context *cmd, const char *lv_name)
 	return vg_name;
 }
 
-const char _pe_size_may_not_be_negative_msg[] = "Physical extent size may not be negative.";
+static const char _pe_size_may_not_be_negative_msg[] = "Physical extent size may not be negative.";
 
 int vgcreate_params_set_defaults(struct cmd_context *cmd,
 				 struct vgcreate_params *vp_def,