diff --git a/cores/arduino/SERCOM.cpp b/cores/arduino/SERCOM.cpp
index b52049071..bac1bdbae 100644
--- a/cores/arduino/SERCOM.cpp
+++ b/cores/arduino/SERCOM.cpp
@@ -500,6 +500,12 @@ bool SERCOM::startTransmissionWIRE(uint8_t address, SercomWireReadWriteFlag flag
     {
       // Wait transmission complete
     }
+    // Check for loss of arbitration (multiple masters starting communication at the same time)
+    if(!isBusOwnerWIRE())
+    {
+      // Restart communication
+      startTransmissionWIRE(address >> 1, flag);
+    }
   }
   else  // Read mode
   {