diff --git a/devtools/server/actors/inspector/walker.js b/devtools/server/actors/inspector/walker.js
index b05381c3291c..799149294e98 100644
--- a/devtools/server/actors/inspector/walker.js
+++ b/devtools/server/actors/inspector/walker.js
@@ -2665,7 +2665,7 @@ var WalkerActor = protocol.ActorClassWithSpec(walkerSpec, {
    * Note that getNodeFromActor was added later and can now be used instead.
    */
   getStyleSheetOwnerNode(resourceId) {
-    const manager = this.targetActor.getStyleSheetManager();
+    const manager = this.targetActor.getStyleSheetsManager();
     const ownerNode = manager.getOwnerNode(resourceId);
     return this.attachElement(ownerNode);
   },
diff --git a/devtools/server/actors/page-style.js b/devtools/server/actors/page-style.js
index a2ccbce6c29b..8794ec3466c8 100644
--- a/devtools/server/actors/page-style.js
+++ b/devtools/server/actors/page-style.js
@@ -106,7 +106,7 @@ var PageStyleActor = protocol.ActorClassWithSpec(pageStyleSpec, {
     this._observedRules = [];
     this._styleApplied = this._styleApplied.bind(this);
 
-    this.styleSheetsManager = this.inspector.targetActor.getStyleSheetManager();
+    this.styleSheetsManager = this.inspector.targetActor.getStyleSheetsManager();
 
     this._onStylesheetUpdated = this._onStylesheetUpdated.bind(this);
     this.styleSheetsManager.on("stylesheet-updated", this._onStylesheetUpdated);
diff --git a/devtools/server/actors/resources/stylesheets.js b/devtools/server/actors/resources/stylesheets.js
index 9c5e32cd3d46..e8df38b8b838 100644
--- a/devtools/server/actors/resources/stylesheets.js
+++ b/devtools/server/actors/resources/stylesheets.js
@@ -37,7 +37,7 @@ class StyleSheetWatcher {
     this._onAvailable = onAvailable;
     this._onUpdated = onUpdated;
 
-    this._styleSheetsManager = targetActor.getStyleSheetManager();
+    this._styleSheetsManager = targetActor.getStyleSheetsManager();
 
     // Add event listener for new additions and updates
     this._styleSheetsManager.on(
diff --git a/devtools/server/actors/style-sheets.js b/devtools/server/actors/style-sheets.js
index da69dc0c8192..8d4847bf9399 100644
--- a/devtools/server/actors/style-sheets.js
+++ b/devtools/server/actors/style-sheets.js
@@ -77,7 +77,7 @@ var StyleSheetsActor = protocol.ActorClassWithSpec(styleSheetsSpec, {
   },
 
   _getStyleSheetsManager() {
-    return this.parentActor.getStyleSheetManager();
+    return this.parentActor.getStyleSheetsManager();
   },
 
   toggleDisabled(resourceId) {
diff --git a/devtools/server/actors/targets/target-actor-mixin.js b/devtools/server/actors/targets/target-actor-mixin.js
index 8ff016d9520d..6a2d7b6dff17 100644
--- a/devtools/server/actors/targets/target-actor-mixin.js
+++ b/devtools/server/actors/targets/target-actor-mixin.js
@@ -99,11 +99,11 @@ module.exports = function(targetType, targetActorSpec, implementation) {
       );
     },
 
-    getStyleSheetManager() {
-      if (!this._styleSheetManager) {
-        this._styleSheetManager = new StyleSheetsManager(this);
+    getStyleSheetsManager() {
+      if (!this._styleSheetsManager) {
+        this._styleSheetsManager = new StyleSheetsManager(this);
       }
-      return this._styleSheetManager;
+      return this._styleSheetsManager;
     },
   };
   // Use getOwnPropertyDescriptors in order to prevent calling getter from implementation
@@ -117,9 +117,9 @@ module.exports = function(targetType, targetActorSpec, implementation) {
     }
   };
   proto.destroy = function() {
-    if (this._styleSheetManager) {
-      this._styleSheetManager.destroy();
-      this._styleSheetManager = null;
+    if (this._styleSheetsManager) {
+      this._styleSheetsManager.destroy();
+      this._styleSheetsManager = null;
     }
 
     if (typeof implementation.destroy == "function") {
diff --git a/devtools/server/actors/utils/stylesheets-manager.js b/devtools/server/actors/utils/stylesheets-manager.js
index b20426c4c875..adfc6e079e35 100644
--- a/devtools/server/actors/utils/stylesheets-manager.js
+++ b/devtools/server/actors/utils/stylesheets-manager.js
@@ -822,7 +822,7 @@ class StyleSheetsManager extends EventEmitter {
   }
 
   /**
-   * The StyleSheetManager instance is managed by the target, so this will be called when
+   * The StyleSheetsManager instance is managed by the target, so this will be called when
    * the target gets destroyed.
    */
   destroy() {