diff --git a/engines/agos/agos.cpp b/engines/agos/agos.cpp
index ed4973b943c..cc5b7ddd104 100644
--- a/engines/agos/agos.cpp
+++ b/engines/agos/agos.cpp
@@ -906,6 +906,7 @@ AGOSEngine::~AGOSEngine() {
 
 	free(_backGroundBuf);
 	free(_backBuf);
+	free(_planarBuf);
 	free(_scaleBuf);
 	free(_zoneBuffers);