diff --git a/src/ipa/ipu3/ipu3_agc.h b/src/ipa/ipu3/ipu3_agc.h
index 99a582a9f..f3d405576 100644
--- a/src/ipa/ipu3/ipu3_agc.h
+++ b/src/ipa/ipu3/ipu3_agc.h
@@ -18,7 +18,7 @@
 
 namespace libcamera {
 
-class IPACameraSensorInfo;
+struct IPACameraSensorInfo;
 
 namespace ipa::ipu3 {