diff --git a/src/icon16.png b/src/icon16.png
new file mode 100644
index 0000000..a0da49b
Binary files /dev/null and b/src/icon16.png differ
diff --git a/src/manifest-chromium.json b/src/manifest-chromium.json
index 0ffd0b4..57e996c 100644
--- a/src/manifest-chromium.json
+++ b/src/manifest-chromium.json
@@ -11,10 +11,14 @@
         "scripts": ["js/background.dist.js"]
     },
     "icons": {
+        "16": "icon16.png",
         "128": "icon.png"
     },
     "browser_action": {
-        "default_icon": "icon.png",
+        "default_icon": {
+            "16": "icon16.png",
+            "128": "icon.png"
+        },
         "default_popup": "popup/popup.html"
     },
     "options_ui": {
diff --git a/src/manifest-firefox.json b/src/manifest-firefox.json
index eb9c512..a2aaea3 100644
--- a/src/manifest-firefox.json
+++ b/src/manifest-firefox.json
@@ -10,10 +10,14 @@
         "scripts": ["js/background.dist.js"]
     },
     "icons": {
+        "16": "icon16.png",
         "128": "icon.png"
     },
     "browser_action": {
-        "default_icon": "icon.svg",
+        "default_icon": {
+            "16": "icon16.png",
+            "128": "icon.svg"
+        },
         "default_popup": "popup/popup.html"
     },
     "options_ui": {