diff --git a/libraries/Wire/src/Wire.cpp b/libraries/Wire/src/Wire.cpp
index afe442f..6504266 100644
--- a/libraries/Wire/src/Wire.cpp
+++ b/libraries/Wire/src/Wire.cpp
@@ -146,7 +146,7 @@ void TwoWire::onIRQ() {
         _i2c->hw->clr_start_det;
     }
     if (_i2c->hw->intr_stat & (1 << 9)) {
-        if (_onReceiveCallback) {
+        if (_onReceiveCallback && _buffLen) {
             _onReceiveCallback(_buffLen);
         }
         _buffLen = 0;