diff --git a/include/libcamera/ipa/core.mojom b/include/libcamera/ipa/core.mojom
index 5363f1c5..70de71ea 100644
--- a/include/libcamera/ipa/core.mojom
+++ b/include/libcamera/ipa/core.mojom
@@ -38,8 +38,7 @@
  *     implemented in ipa_data_serializer.h, as it cannot be defined in mojom
  * - [skipHeader] and [skipSerdes] only work here in core.mojom.
  * - If a struct definition has [skipHeader], then the header where the
- *   struct is defined must be #included (or the struct forward-declared) in
- *   ipa_interface.h
+ *   struct is defined must be #included in ipa_interface.h
  * - If a field in a struct has a FileDescriptor, but is not explicitly
  *   defined so in mojom, then the field must be marked with the [hasFd]
  *   attribute.
diff --git a/include/libcamera/ipa/ipa_interface.h b/include/libcamera/ipa/ipa_interface.h
index 5d99e2cf..dfe1b40a 100644
--- a/include/libcamera/ipa/ipa_interface.h
+++ b/include/libcamera/ipa/ipa_interface.h
@@ -18,15 +18,15 @@
 #include <libcamera/geometry.h>
 #include <libcamera/signal.h>
 
+#include "libcamera/internal/camera_sensor.h"
+
 namespace libcamera {
 
 /*
  * Structs that are defined in core.mojom and have the skipHeader tag must be
- * forward-declared or #included here.
+ * #included here.
  */
 
-struct CameraSensorInfo;
-
 class IPAInterface
 {
 public: