diff --git a/base/data-struct/radix-tree-adaptive.c b/base/data-struct/radix-tree-adaptive.c
index 3a46cc14b..121a2910c 100644
--- a/base/data-struct/radix-tree-adaptive.c
+++ b/base/data-struct/radix-tree-adaptive.c
@@ -1032,7 +1032,7 @@ void radix_tree_iterate(struct radix_tree *rt, uint8_t *kb, uint8_t *ke,
 {
 	struct lookup_result lr = _lookup_prefix(&rt->root, kb, ke);
 	if (lr.kb == ke || _prefix_chain_matches(&lr, ke))
-        	_iterate(lr.v, it);
+		(void) _iterate(lr.v, it);
 }
 
 //----------------------------------------------------------------
diff --git a/lib/label/hints.c b/lib/label/hints.c
index c9d339861..55f55900d 100644
--- a/lib/label/hints.c
+++ b/lib/label/hints.c
@@ -966,7 +966,7 @@ int write_hint_file(struct cmd_context *cmd, int newhints)
 		 * detect when the devices on the system change, which
 		 * invalidates the existing hints.
 		 */
-		strncpy(devpath, dev_name(dev), PATH_MAX);
+		(void) dm_strncpy(devpath, dev_name(dev), sizeof(devpath));
 		hash = calc_crc(hash, (const uint8_t *)devpath, strlen(devpath));
 		count++;
 
diff --git a/tools/command.c b/tools/command.c
index 2d0184941..4fc55e2be 100644
--- a/tools/command.c
+++ b/tools/command.c
@@ -367,7 +367,7 @@ static int _opt_str_to_num(struct command *cmd, char *str)
 	int i;
 	int first = 0, last = ARG_COUNT - 1, middle;
 
-	dm_strncpy(long_name, str, sizeof(long_name));
+	(void) dm_strncpy(long_name, str, sizeof(long_name));
 
 	if ((p = strstr(long_name, "_long")))
 		/*
@@ -802,7 +802,7 @@ static char *_get_oo_line(const char *str)
 	char str2[OO_NAME_LEN];
 	int i;
 
-	dm_strncpy(str2, str, sizeof(str2));
+	(void) dm_strncpy(str2, str, sizeof(str2));
 	if ((end = strchr(str2, ':')))
 		*end = '\0';
 	if ((end = strchr(str2, ',')))