diff --git a/AfRApay.MateCard/src/Adafruit_PN532.cpp b/AfRApay.MateCard/src/Adafruit_PN532.cpp
index dd22bb3..e3e3211 100644
--- a/AfRApay.MateCard/src/Adafruit_PN532.cpp
+++ b/AfRApay.MateCard/src/Adafruit_PN532.cpp
@@ -124,7 +124,7 @@ Adafruit_PN532::Adafruit_PN532(uint8_t irq, uint8_t reset, TwoWire* theWire)
 /**************************************************************************/
 Adafruit_PN532::Adafruit_PN532(uint8_t ss, SPIClass* theSPI) {
 	_cs = ss;
-	spi_dev = new Adafruit_SPIDevice(ss, 1000000, SPI_BITORDER_LSBFIRST,
+	spi_dev = new Adafruit_SPIDevice(ss, 100000, SPI_BITORDER_LSBFIRST,
 	                                 SPI_MODE0, theSPI);
 }