diff --git a/boards/arm/rp2040/common/src/rp2040_common_bringup.c b/boards/arm/rp2040/common/src/rp2040_common_bringup.c
index 516d47658d..7fdc2d89fc 100644
--- a/boards/arm/rp2040/common/src/rp2040_common_bringup.c
+++ b/boards/arm/rp2040/common/src/rp2040_common_bringup.c
@@ -616,7 +616,7 @@ int rp2040_common_bringup(void)
         {
           syslog(LOG_ERR, "ERROR: smart_initialize failed: %d\n", -ret);
         }
-      else if (strlen(CONFIG_RP2040_FLASH_MOUNT_POINT) > 0)
+      else if (sizeof(CONFIG_RP2040_FLASH_MOUNT_POINT) > 1)
         {
           mkdir(CONFIG_RP2040_FLASH_MOUNT_POINT, 0777);
 
diff --git a/net/local/local_fifo.c b/net/local/local_fifo.c
index 7174857054..363f22b0bc 100644
--- a/net/local/local_fifo.c
+++ b/net/local/local_fifo.c
@@ -68,9 +68,9 @@ static void local_format_name(FAR const char *inpath, FAR char *outpath,
                               FAR const char *suffix, int32_t id)
 {
   if (strncmp(inpath, CONFIG_NET_LOCAL_VFS_PATH,
-              strlen(CONFIG_NET_LOCAL_VFS_PATH)) == 0)
+              sizeof(CONFIG_NET_LOCAL_VFS_PATH) - 1) == 0)
     {
-      inpath += strlen(CONFIG_NET_LOCAL_VFS_PATH);
+      inpath += sizeof(CONFIG_NET_LOCAL_VFS_PATH) - 1;
     }
 
   if (id < 0)