diff --git a/common/component_templates/RG_ship_parts.txt b/common/component_templates/RG_ship_parts.txt
index 50063c2..9ec8087 100644
--- a/common/component_templates/RG_ship_parts.txt
+++ b/common/component_templates/RG_ship_parts.txt
@@ -2321,6 +2321,8 @@ utility_component_template = {
 	}
 	size_restriction = {
 		RG_graygoo_destroyer
+		RG_armed_science_ship
+		RG_armed_constructor_ship
 	}
 	component_set = "power_core"
 	ai_weight = {