diff --git a/app/src/main/res/values-fi/strings.xml b/app/src/main/res/values-fi/strings.xml
index fb2f9643..e6530582 100644
--- a/app/src/main/res/values-fi/strings.xml
+++ b/app/src/main/res/values-fi/strings.xml
@@ -178,6 +178,9 @@
     <string name="rtcp_mux_help">Jos merkitty, RTP- and RTCP-paketit multipleksataan samaan porttiin
         (RFC 5761).
     </string>
+    <string name="rel_100">Luotettavat alustavat vastaukset</string>
+    <string name="rel_100_help">Jos merkitty, kutsussa ilmoitetaan luotettavien alustavien vastausten
+        tukemisesta (RFC 3262).</string>
     <string name="dtmf_mode">DTMF-moodi</string>
     <string name="dtmf_mode_help">Valitsee tavan, miten DTMF-merkit 0–9, #, * ja A-D lähetetään.</string>
     <string name="dtmf_inband">RTP</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index a914faae..ba1e466a 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -171,7 +171,7 @@
     <string name="rtcp_mux">RTCP Multiplexing</string>
     <string name="rtcp_mux_help">If checked, RTP and RTCP packets are multiplexed on a single port (RFC 5761).</string>
     <string name="rel_100">Reliable Provisional Responses</string>
-    <string name="rel_100_help">If checked, indicate support for reliable provisional responses.</string>
+    <string name="rel_100_help">If checked, indicate support for reliable provisional responses (RFC 3262).</string>
     <string name="dtmf_mode">DTMF Mode</string>
     <string name="dtmf_mode_help">Selects how DTMF tones 0–9, #, *, and A-D are sent.</string>
     <string name="dtmf_inband">In-band RTP Events</string>