diff --git a/ggml.c b/ggml.c
index 78982eec8..392dcc510 100644
--- a/ggml.c
+++ b/ggml.c
@@ -2012,7 +2012,7 @@ static const quantize_fns_t quantize_fns[GGML_TYPE_COUNT] = {
     [GGML_TYPE_Q4_3] = {
         .dequantize_row_q         = dequantize_row_q4_3,
         .quantize_row_q           = quantize_row_q4_3,
-        .quantize_row_q_reference = (quantize_row_q_t) quantize_row_q4_3_reference, // TODO: RMSE optimization
+        .quantize_row_q_reference = (quantize_row_q_t) quantize_row_q4_3_reference,
         .quantize_row_q_dot       = quantize_row_q8_0,
         .vec_dot_q                = ggml_vec_dot_q4_3_q8_0,
     },