diff --git a/OpenKeychain/src/main/res/values/strings.xml b/OpenKeychain/src/main/res/values/strings.xml
index e6a336853..a2a3497f5 100644
--- a/OpenKeychain/src/main/res/values/strings.xml
+++ b/OpenKeychain/src/main/res/values/strings.xml
@@ -295,7 +295,7 @@
     <string name="ecc_p256">"ECC P-256"</string>
     <string name="ecc_p256_description_html">"very tiny file size, considered secure until 2040 &lt;br/> &lt;u>experimental and not supported by all implementations&lt;/u>"</string>
     <string name="ecc_p521">"ECC P-521"</string>
-    <string name="ecc_p521_description_html">"tiny file size, considered secure until 2040+ &lt;br/> &lt;u>experimental and not supported by all implementations"&lt;/u>"</string>
+    <string name="ecc_p521_description_html">"tiny file size, considered secure until 2040+ &lt;br/> &lt;u>experimental and not supported by all implementations&lt;/u>"</string>
     <string name="usage_none">"None (subkey binding only)"</string>
     <string name="usage_sign">"Sign"</string>
     <string name="usage_encrypt">"Encrypt"</string>