diff --git a/code/modules/reagents/chemistry/machinery/portable_chem_mixer.dm b/code/modules/reagents/chemistry/machinery/portable_chem_mixer.dm
index bdc008ce336..9ad8e3ecfc5 100644
--- a/code/modules/reagents/chemistry/machinery/portable_chem_mixer.dm
+++ b/code/modules/reagents/chemistry/machinery/portable_chem_mixer.dm
@@ -103,7 +103,7 @@
 	if(atom_storage.locked == STORAGE_FULLY_LOCKED)
 		atom_storage.locked = STORAGE_NOT_LOCKED
 		replace_beaker(user)
-		SStgui.close_all_uis()
+		SStgui.close_uis(src)
 	else
 		atom_storage.locked = STORAGE_FULLY_LOCKED
 		atom_storage.hide_contents(usr)