diff --git a/src/ipa/rkisp1/algorithms/agc.cpp b/src/ipa/rkisp1/algorithms/agc.cpp
index d34c041f9fe1..8227d60213c2 100644
--- a/src/ipa/rkisp1/algorithms/agc.cpp
+++ b/src/ipa/rkisp1/algorithms/agc.cpp
@@ -396,7 +396,7 @@ void Agc::prepare(IPAContext &context, const uint32_t frame,
 	hstConfig.setEnabled(true);
 
 	hstConfig->meas_window = context.configuration.agc.measureWindow;
-	hstConfig->mode = RKISP1_CIF_ISP_HISTOGRAM_MODE_Y_HISTOGRAM;
+	hstConfig->mode = RKISP1_CIF_ISP_HISTOGRAM_MODE_RGB_COMBINED;
 
 	Span<uint8_t> weights{
 		hstConfig->hist_weight,