diff --git a/src/g_shared/a_dynlight.cpp b/src/g_shared/a_dynlight.cpp
index 65fae7176..98d57c4ab 100644
--- a/src/g_shared/a_dynlight.cpp
+++ b/src/g_shared/a_dynlight.cpp
@@ -152,6 +152,7 @@ void ADynamicLight::PostSerialize()
 	// The default constructor which is used for creating objects before deserialization will not set this variable.
 	// It needs to be true for all placed lights.
 	visibletoplayer = true;
+	mShadowmapIndex = 1024;
 	LinkLight();
 }