diff --git a/code/modules/research/techweb/all_nodes.dm b/code/modules/research/techweb/all_nodes.dm
index 53eba7e506fa52..4f1cf04084c75b 100755
--- a/code/modules/research/techweb/all_nodes.dm
+++ b/code/modules/research/techweb/all_nodes.dm
@@ -18,7 +18,7 @@
 	display_name = "Biological Technology"
 	description = "What makes us tick."	//the MC, silly!
 	prereq_ids = list("base")
-	design_ids = list("mass_spectrometer", "chem_heater", "chem_master", "chem_dispenser", "sleeper", "pandemic")
+	design_ids = list("chem_heater", "chem_master", "chem_dispenser", "sleeper", "pandemic")
 	research_cost = 2500
 	export_price = 10000
 
@@ -27,7 +27,7 @@
 	display_name = "Advanced Biotechnology"
 	description = "Advanced Biotechnology"
 	prereq_ids = list("biotech")
-	design_ids = list("piercesyringe", "adv_mass_spectrometer", "plasmarefiller", "limbgrower")
+	design_ids = list("piercesyringe", "plasmarefiller", "limbgrower")
 	research_cost = 2500
 	export_price = 10000
 
@@ -857,4 +857,4 @@
 	name = "Energy Crossbow"
 	id = "largecrossbow"
 	build_path = /obj/item/gun/energy/kinetic_accelerator/crossbow/large
-*/
\ No newline at end of file
+*/