diff --git a/addons/escoria-core/game/core-scripts/esc/commands/walk.gd b/addons/escoria-core/game/core-scripts/esc/commands/walk.gd
index 652e19a6..6666e62e 100644
--- a/addons/escoria-core/game/core-scripts/esc/commands/walk.gd
+++ b/addons/escoria-core/game/core-scripts/esc/commands/walk.gd
@@ -72,4 +72,5 @@ func run(command_params: Array) -> int:
 
 # Function called when the command is interrupted.
 func interrupt():
-	walking_object_node.stop_walking_now()
+	if walking_object_node != null:
+		walking_object_node.stop_walking_now()
diff --git a/addons/escoria-core/game/core-scripts/esc/commands/walk_block.gd b/addons/escoria-core/game/core-scripts/esc/commands/walk_block.gd
index 00cc22f5..ef90301c 100644
--- a/addons/escoria-core/game/core-scripts/esc/commands/walk_block.gd
+++ b/addons/escoria-core/game/core-scripts/esc/commands/walk_block.gd
@@ -73,5 +73,5 @@ func run(command_params: Array) -> int:
 
 # Function called when the command is interrupted.
 func interrupt():
-	if not walking_object_node is ESCPlayer:
+	if walking_object_node != null and not walking_object_node is ESCPlayer:
 		walking_object_node.stop_walking_now()
diff --git a/addons/escoria-core/game/core-scripts/esc/commands/walk_to_pos.gd b/addons/escoria-core/game/core-scripts/esc/commands/walk_to_pos.gd
index 09635491..fd783474 100644
--- a/addons/escoria-core/game/core-scripts/esc/commands/walk_to_pos.gd
+++ b/addons/escoria-core/game/core-scripts/esc/commands/walk_to_pos.gd
@@ -62,5 +62,5 @@ func run(command_params: Array) -> int:
 
 # Function called when the command is interrupted.
 func interrupt():
-	if not walking_object_node is ESCPlayer:
+	if walking_object_node != null and not walking_object_node is ESCPlayer:
 		walking_object_node.stop_walking_now()
diff --git a/addons/escoria-core/game/core-scripts/esc/commands/walk_to_pos_block.gd b/addons/escoria-core/game/core-scripts/esc/commands/walk_to_pos_block.gd
index ddc80f69..e3fa5bd8 100644
--- a/addons/escoria-core/game/core-scripts/esc/commands/walk_to_pos_block.gd
+++ b/addons/escoria-core/game/core-scripts/esc/commands/walk_to_pos_block.gd
@@ -66,5 +66,5 @@ func run(command_params: Array) -> int:
 
 # Function called when the command is interrupted.
 func interrupt():
-	if not walking_object_node is ESCPlayer:
+	if walking_object_node != null and not walking_object_node is ESCPlayer:
 		walking_object_node.stop_walking_now()