diff --git a/lib/blob/blobstore.c b/lib/blob/blobstore.c
index 5d3b4d95a..995c1a9d5 100644
--- a/lib/blob/blobstore.c
+++ b/lib/blob/blobstore.c
@@ -2811,6 +2811,13 @@ spdk_bs_load(struct spdk_bs_dev *dev, struct spdk_bs_opts *o,
 
 	SPDK_DEBUGLOG(SPDK_LOG_BLOB, "Loading blobstore from dev %p\n", dev);
 
+	if ((SPDK_BS_PAGE_SIZE % dev->blocklen) != 0) {
+		SPDK_DEBUGLOG(SPDK_LOG_BLOB, "unsupported dev block length of %d\n", dev->blocklen);
+		dev->destroy(dev);
+		cb_fn(cb_arg, NULL, -EINVAL);
+		return;
+	}
+
 	if (o) {
 		opts = *o;
 	} else {
diff --git a/test/unit/lib/blob/blob.c/blob_ut.c b/test/unit/lib/blob/blob.c/blob_ut.c
index cebeb32a1..f803cd574 100644
--- a/test/unit/lib/blob/blob.c/blob_ut.c
+++ b/test/unit/lib/blob/blob.c/blob_ut.c
@@ -1541,6 +1541,11 @@ bs_load(void)
 	super_block = (struct spdk_bs_super_block *)g_dev_buffer;
 	CU_ASSERT(super_block->clean == 1);
 
+	/* Load should fail for device with an unsupported blocklen */
+	dev = init_dev();
+	dev->blocklen = SPDK_BS_PAGE_SIZE * 2;
+	spdk_bs_load(dev, NULL, bs_op_with_handle_complete, NULL);
+	CU_ASSERT(g_bserrno == -EINVAL);
 
 	/* Load an existing blob store */
 	dev = init_dev();