diff --git a/Sonoff-DIY.md b/Sonoff-DIY.md
index 3ab0c04d..9a2680a6 100644
--- a/Sonoff-DIY.md
+++ b/Sonoff-DIY.md
@@ -93,7 +93,7 @@ This procedure is recommended for MacOS.
 ## Post Installation
 Once the firmware upload completes and the device restarts, the usual "sonoff-xxxx" SSID should now be available. It is recommend that you upgrade to the firmware and Core variant that is needed for your device and use case (e.g., `sonoff.bin`). Once the desired firmware is on the device, continue the regular Tasmota setup process.
 
-The S1 and S2 contacts can be used by setting GPIO4 to Switch1(09) 
+The S1+S2 contacts can be used by setting GPIO4 to Switch1(09) 
 
 ### Video tutorials
 - [Andreas Spiess](https://youtu.be/fzEDFmB0UYU?t=239)