diff --git a/src/renderers/WebGLRenderer.js b/src/renderers/WebGLRenderer.js
index 431bb284dfecea17e352bd0b218903bc169f96f5..4bbdf39aad9d331bd3d41f7b99cfa8e94148b50e 100644
--- a/src/renderers/WebGLRenderer.js
+++ b/src/renderers/WebGLRenderer.js
@@ -2588,7 +2588,9 @@ function WebGLRenderer( parameters ) {
 	};
 
 	if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
-		__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );
+
+		__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) ); // eslint-disable-line no-undef
+
 	}
 
 }
diff --git a/src/scenes/Scene.js b/src/scenes/Scene.js
index 186769dc4a4a1be7e5c6f409e5505e40eafb8b0d..98352b694b662f0244e008e6af4c37de5b55136b 100644
--- a/src/scenes/Scene.js
+++ b/src/scenes/Scene.js
@@ -17,7 +17,9 @@ function Scene() {
 	this.autoUpdate = true; // checked by the renderer
 
 	if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
-		__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );
+
+		__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) ); // eslint-disable-line no-undef
+
 	}
 
 }