diff --git a/code/modules/paperwork/pen.dm b/code/modules/paperwork/pen.dm
index 5bcb7a60df..875a65d306 100644
--- a/code/modules/paperwork/pen.dm
+++ b/code/modules/paperwork/pen.dm
@@ -158,6 +158,7 @@
 	if(..())
 		if(reagents.total_volume)
 			if(M.reagents)
+				reagents.reaction(M, INJECT)
 				reagents.trans_to(M, reagents.total_volume)