diff --git a/src/main/res/values/strings.xml b/src/main/res/values/strings.xml
index 18cb7cd63..0f8fc32fb 100644
--- a/src/main/res/values/strings.xml
+++ b/src/main/res/values/strings.xml
@@ -8,6 +8,7 @@
     <string name="or_separator">or</string>
     <string name="clear_search">Clear Search</string>
     <string name="link">Link</string>
+    <!-- "scan" in the meaning of "scan QR code" -->
     <string name="scan">Scan</string>
     <string name="yes">Yes</string>
     <string name="no">No</string>