diff --git a/code/__HELPERS/icons.dm b/code/__HELPERS/icons.dm
index 2daf9450389..69349bcc982 100644
--- a/code/__HELPERS/icons.dm
+++ b/code/__HELPERS/icons.dm
@@ -167,7 +167,7 @@ mob
 
 		Output_Icon()
 			set name = "2. Output Icon"
-			src<<"Icon is: \icon[getFlatIcon(src)]"
+			to_chat(src, "Icon is: \icon[getFlatIcon(src)]")
 
 		Label_Icon()
 			set name = "3. Label Icon"
diff --git a/code/__HELPERS/maths.dm b/code/__HELPERS/maths.dm
index 58ce45ffabb..c7a912af59f 100644
--- a/code/__HELPERS/maths.dm
+++ b/code/__HELPERS/maths.dm
@@ -139,7 +139,7 @@ var/list/sqrtTable = list(1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4,
 		var/size_factor = ((-cos(inputToDegrees) +1) /2) //returns a value from 0 to 1
 
 		return size_factor + scaling_modifier //scale mod of 0 results in a number from 0 to 1. A scale modifier of +0.5 returns 0.5 to 1.5
-		//world<< "Transform multiplier of [src] is [size_factor + scaling_modifer]"
+		//to_chat(world, "Transform multiplier of [src] is [size_factor + scaling_modifer]")
 
 
 
diff --git a/code/game/machinery/overview.dm b/code/game/machinery/overview.dm
index 57b0ae2cd8c..9dfb77ab669 100644
--- a/code/game/machinery/overview.dm
+++ b/code/game/machinery/overview.dm
@@ -163,7 +163,7 @@
 
 		H.screen_loc = "[5 + i%icx],[6+ round(i/icx)]"
 
-		//world<<"\icon[I] at [H.screen_loc]"
+		//to_chat(world, "\icon[I] at [H.screen_loc]")
 
 		H.name = (i==0)?"maprefresh":"map"
 
@@ -289,7 +289,7 @@
 
 		H.screen_loc = "[5 + i%icx],[6+ round(i/icx)]"
 
-		//world<<"\icon[I] at [H.screen_loc]"
+		//to_chat(world, "\icon[I] at [H.screen_loc]")
 
 		H.name = (i==0)?"maprefresh":"map"
 
diff --git a/code/game/machinery/teleporter.dm b/code/game/machinery/teleporter.dm
index 4b3b6f6796c..55d9fac2edd 100644
--- a/code/game/machinery/teleporter.dm
+++ b/code/game/machinery/teleporter.dm
@@ -305,7 +305,7 @@
 				if(ishuman(M))//don't remove people from the round randomly you jerks
 					var/mob/living/carbon/human/human = M
 					if(human.dna && human.dna.species.id == "human")
-						M  << "<span class='italics'>You hear a buzzing in your ears.</span>"
+						to_chat(M, "<span class='italics'>You hear a buzzing in your ears.</span>")
 						human.set_species(/datum/species/fly)
 
 					human.apply_effect((rand(120 - accurate * 40, 180 - accurate * 60)), IRRADIATE, 0)
diff --git a/code/modules/events/holiday/friday13th.dm b/code/modules/events/holiday/friday13th.dm
index e1a393fb867..50c690f6e70 100644
--- a/code/modules/events/holiday/friday13th.dm
+++ b/code/modules/events/holiday/friday13th.dm
@@ -15,4 +15,4 @@
 
 /datum/round_event/fridaythethirteen/announce()
 	for(var/mob/living/L in player_list)
-		L << "<span class='warning'>You are feeling unlucky today.</span>"
\ No newline at end of file
+		to_chat(L, "<span class='warning'>You are feeling unlucky today.</span>")
\ No newline at end of file
diff --git a/code/modules/mining/machine_vending.dm b/code/modules/mining/machine_vending.dm
index 42121d7952f..123c41a8004 100644
--- a/code/modules/mining/machine_vending.dm
+++ b/code/modules/mining/machine_vending.dm
@@ -275,7 +275,7 @@
 		I.access |= access_mining_station
 		I.access |= access_mineral_storeroom
 		I.access |= access_cargo
-		user  << "You upgrade [I] with mining access."
+		to_chat(user, "You upgrade [I] with mining access.")
 		qdel(src)
 	..()
 
diff --git a/code/modules/paperwork/contract.dm b/code/modules/paperwork/contract.dm
index f9b93e73125..634a2d056d9 100644
--- a/code/modules/paperwork/contract.dm
+++ b/code/modules/paperwork/contract.dm
@@ -186,7 +186,7 @@
 					to_chat(user, "<span class='notice'>You are already alive, this contract would do nothing.</span>")
 				else
 					if(signed)
-						user<< "<span class='notice'>This contract has already been signed.  It may not be signed again.</span>"
+						to_chat(user, "<span class='notice'>This contract has already been signed.  It may not be signed again.</span>")
 					else
 						to_chat(user, "<span class='notice'>You quickly scrawl your name on the contract</span>")
 						if(FulfillContract(target.current, blood)<=0)
diff --git a/code/modules/power/singularity/emitter.dm b/code/modules/power/singularity/emitter.dm
index f6bccc13d01..575026a6701 100644
--- a/code/modules/power/singularity/emitter.dm
+++ b/code/modules/power/singularity/emitter.dm
@@ -220,7 +220,7 @@
 /obj/machinery/power/emitter/can_be_unfasten_wrench(mob/user, silent)
 	if(state == EM_WELDED)
 		if(!silent)
-			user  << "<span class='warning'>[src] is welded to the floor!</span>"
+			to_chat(user, "<span class='warning'>[src] is welded to the floor!</span>")
 		return FAILED_UNFASTEN
 	return ..()
 
diff --git a/code/modules/power/singularity/field_generator.dm b/code/modules/power/singularity/field_generator.dm
index c73099e676a..dc72a29e333 100644
--- a/code/modules/power/singularity/field_generator.dm
+++ b/code/modules/power/singularity/field_generator.dm
@@ -80,7 +80,7 @@ field_generator power level display
 /obj/machinery/field/generator/can_be_unfasten_wrench(mob/user, silent)
 	if(state == FG_WELDED)
 		if(!silent)
-			user  << "<span class='warning'>[src] is welded to the floor!</span>"
+			to_chat(user, "<span class='warning'>[src] is welded to the floor!</span>")
 		return FAILED_UNFASTEN
 	return ..()