diff --git a/code/modules/atmospherics/machinery/portable/portable_atmospherics.dm b/code/modules/atmospherics/machinery/portable/portable_atmospherics.dm
index f16261ef6e6..715f90b0030 100644
--- a/code/modules/atmospherics/machinery/portable/portable_atmospherics.dm
+++ b/code/modules/atmospherics/machinery/portable/portable_atmospherics.dm
@@ -124,11 +124,13 @@
 			if(!user.transferItemToLoc(T, src))
 				return
 			to_chat(user, "<span class='notice'>[holding ? "In one smooth motion you pop [holding] out of [src]'s connector and replace it with [T]" : "You insert [T] into [src]"].</span>")
+			investigate_log("had its internal [holding] swapped with [T] by [key_name(user)].<br>", INVESTIGATE_ATMOS)
 			replace_tank(user, FALSE, T)
 			update_icon()
 	else if(W.tool_behaviour == TOOL_WRENCH)
 		if(!(stat & BROKEN))
 			if(connected_port)
+				investigate_log("was disconnected from [connected_port] by [key_name(user)].<br>", INVESTIGATE_ATMOS)
 				disconnect()
 				W.play_tool_sound(src)
 				user.visible_message( \
@@ -151,6 +153,7 @@
 					"<span class='notice'>You fasten [src] to the port.</span>", \
 					"<span class='hear'>You hear a ratchet.</span>")
 				update_icon()
+				investigate_log("was connected to [possible_port] by [key_name(user)].<br>", INVESTIGATE_ATMOS)
 	else
 		return ..()