diff --git a/src/ipa/raspberrypi/raspberrypi.cpp b/src/ipa/raspberrypi/raspberrypi.cpp
index 0f914f841e54..c0e7540bcd2e 100644
--- a/src/ipa/raspberrypi/raspberrypi.cpp
+++ b/src/ipa/raspberrypi/raspberrypi.cpp
@@ -1062,7 +1062,7 @@ void IPARPi::prepareISP(const ISPConfig &data)
 		 * in helper_->Prepare().
 		 */
 		RPiController::Metadata &lastMetadata =
-			rpiMetadata_[ipaContext ? ipaContext : rpiMetadata_.size()];
+			rpiMetadata_[ipaContext ? ipaContext - 1 : rpiMetadata_.size()];
 		rpiMetadata.mergeCopy(lastMetadata);
 		processPending_ = false;
 		return;