diff --git a/internal/entity/embedding.go b/internal/entity/embedding.go
index 4239b11b7..38806412b 100644
--- a/internal/entity/embedding.go
+++ b/internal/entity/embedding.go
@@ -22,6 +22,10 @@ func EmbeddingsMidpoint(m Embeddings) (result Embedding, radius float64, count i
 			continue
 		}
 
+		if len(m[i]) != len(m[i-1]) {
+			continue
+		}
+
 		for j, val := range result {
 			result[j] = (val + emb[j]) / 2
 		}