diff --git a/src/ipa/rpi/controller/rpi/awb_nn.cpp b/src/ipa/rpi/controller/rpi/awb_nn.cpp
index 1c205126..c382f63d 100644
--- a/src/ipa/rpi/controller/rpi/awb_nn.cpp
+++ b/src/ipa/rpi/controller/rpi/awb_nn.cpp
@@ -35,8 +35,6 @@ using namespace libcamera;
 
 LOG_DECLARE_CATEGORY(RPiAwb)
 
-constexpr double kDefaultCT = 4500.0;
-
 /*
  * The neural networks are trained to work on images rendered at a canonical
  * colour temperature. That value is 5000K, which must be reproduced here.