diff --git a/src/target/lpc43xx.c b/src/target/lpc43xx.c
index d09bb211bd2..98771b1d7fc 100644
--- a/src/target/lpc43xx.c
+++ b/src/target/lpc43xx.c
@@ -680,10 +680,12 @@ static bool lpc43x0_attach(target_s *const target)
 static void lpc43x0_detach(target_s *const target)
 {
 	lpc43x0_priv_s *const priv = (lpc43x0_priv_s *)target->target_storage;
-	free(priv->flash->flash_high);
-	free(priv->flash);
-	priv->flash = NULL;
-	target->flash = NULL;
+	if (priv->flash) {
+		free(priv->flash->flash_high);
+		free(priv->flash);
+		priv->flash = NULL;
+		target->flash = NULL;
+	}
 	cortexm_detach(target);
 }