diff --git a/src/shared/keyed-each.js b/src/shared/keyed-each.js
index 591da14b17..1e5c15f81a 100644
--- a/src/shared/keyed-each.js
+++ b/src/shared/keyed-each.js
@@ -49,8 +49,8 @@ export function updateKeyedEach(old_blocks, component, changed, get_key, dynamic
 	var will_move = {};
 	var did_move = {};
 
-	function insert(block, removeFirst) {
-		if (removeFirst && block.o) block.o(noop);
+	function insert(block) {
+		if (lookup[block.key] && block.o) block.o(noop);
 		block[intro_method](node, next);
 		lookup[block.key] = block;
 		next = block.first;
@@ -77,7 +77,7 @@ export function updateKeyedEach(old_blocks, component, changed, get_key, dynamic
 		}
 
 		else if (!lookup[new_key] || will_move[new_key]) {
-			insert(new_block, !!lookup[new_key]);
+			insert(new_block);
 		}
 
 		else if (did_move[old_key]) {
@@ -85,7 +85,7 @@ export function updateKeyedEach(old_blocks, component, changed, get_key, dynamic
 
 		} else if (deltas[new_key] > deltas[old_key]) {
 			did_move[new_key] = true;
-			insert(new_block, true);
+			insert(new_block);
 
 		} else {
 			will_move[old_key] = true;
diff --git a/test/js/samples/each-block-keyed-animated/expected-bundle.js b/test/js/samples/each-block-keyed-animated/expected-bundle.js
index ec3d717d9b..74982be2bf 100644
--- a/test/js/samples/each-block-keyed-animated/expected-bundle.js
+++ b/test/js/samples/each-block-keyed-animated/expected-bundle.js
@@ -291,8 +291,8 @@ function updateKeyedEach(old_blocks, component, changed, get_key, dynamic, ctx,
 	var will_move = {};
 	var did_move = {};
 
-	function insert(block, removeFirst) {
-		if (removeFirst && block.o) block.o(noop);
+	function insert(block) {
+		if (lookup[block.key] && block.o) block.o(noop);
 		block[intro_method](node, next);
 		lookup[block.key] = block;
 		next = block.first;
@@ -319,7 +319,7 @@ function updateKeyedEach(old_blocks, component, changed, get_key, dynamic, ctx,
 		}
 
 		else if (!lookup[new_key] || will_move[new_key]) {
-			insert(new_block, !!lookup[new_key]);
+			insert(new_block);
 		}
 
 		else if (did_move[old_key]) {
@@ -327,7 +327,7 @@ function updateKeyedEach(old_blocks, component, changed, get_key, dynamic, ctx,
 
 		} else if (deltas[new_key] > deltas[old_key]) {
 			did_move[new_key] = true;
-			insert(new_block, true);
+			insert(new_block);
 
 		} else {
 			will_move[old_key] = true;
diff --git a/test/js/samples/each-block-keyed/expected-bundle.js b/test/js/samples/each-block-keyed/expected-bundle.js
index ec3aff8e03..d5695d673b 100644
--- a/test/js/samples/each-block-keyed/expected-bundle.js
+++ b/test/js/samples/each-block-keyed/expected-bundle.js
@@ -71,8 +71,8 @@ function updateKeyedEach(old_blocks, component, changed, get_key, dynamic, ctx,
 	var will_move = {};
 	var did_move = {};
 
-	function insert(block, removeFirst) {
-		if (removeFirst && block.o) block.o(noop);
+	function insert(block) {
+		if (lookup[block.key] && block.o) block.o(noop);
 		block[intro_method](node, next);
 		lookup[block.key] = block;
 		next = block.first;
@@ -99,7 +99,7 @@ function updateKeyedEach(old_blocks, component, changed, get_key, dynamic, ctx,
 		}
 
 		else if (!lookup[new_key] || will_move[new_key]) {
-			insert(new_block, !!lookup[new_key]);
+			insert(new_block);
 		}
 
 		else if (did_move[old_key]) {
@@ -107,7 +107,7 @@ function updateKeyedEach(old_blocks, component, changed, get_key, dynamic, ctx,
 
 		} else if (deltas[new_key] > deltas[old_key]) {
 			did_move[new_key] = true;
-			insert(new_block, true);
+			insert(new_block);
 
 		} else {
 			will_move[old_key] = true;