diff --git a/devtools/client/styleeditor/StyleEditorUI.jsm b/devtools/client/styleeditor/StyleEditorUI.jsm
index e97e678a3be5..0161012bbb9c 100644
--- a/devtools/client/styleeditor/StyleEditorUI.jsm
+++ b/devtools/client/styleeditor/StyleEditorUI.jsm
@@ -264,6 +264,7 @@ StyleEditorUI.prototype = {
       try {
         yield this._addStyleSheet(sheet);
       } catch (e) {
+        console.error(e);
         this.emit("error", { key: LOAD_ERROR });
       }
     }
diff --git a/devtools/client/styleeditor/StyleSheetEditor.jsm b/devtools/client/styleeditor/StyleSheetEditor.jsm
index 4f4554016795..49b8ba88fab4 100644
--- a/devtools/client/styleeditor/StyleSheetEditor.jsm
+++ b/devtools/client/styleeditor/StyleSheetEditor.jsm
@@ -297,6 +297,7 @@ StyleSheetEditor.prototype = {
                      ", the editor was destroyed");
         console.error(e);
       } else {
+        console.error(e);
         this.emit("error", { key: LOAD_ERROR, append: this.styleSheet.href });
         throw e;
       }