diff --git a/PN5180.cpp b/PN5180.cpp
index 9ab344e..6a95c9e 100644
--- a/PN5180.cpp
+++ b/PN5180.cpp
@@ -79,12 +79,23 @@ void PN5180::begin(int8_t sck, int8_t miso, int8_t mosi, int8_t ss) {
   digitalWrite(PN5180_NSS, HIGH); // disable
   digitalWrite(PN5180_RST, HIGH); // no reset
 
-  PN5180_SPI.begin(PN5180_SCK, PN5180_MISO, PN5180_MOSI, PN5180_NSS);
-  PN5180DEBUG(F("SPI pinout: "));
-  PN5180DEBUG(F("SS=")); PN5180DEBUG(PN5180_NSS);
-  PN5180DEBUG(F(", MOSI=")); PN5180DEBUG(PN5180_MOSI);
-  PN5180DEBUG(F(", MISO=")); PN5180DEBUG(PN5180_MISO);
-  PN5180DEBUG(F(", SCK=")); PN5180DEBUG(PN5180_SCK);
+  if ((PN5180_SCK > 0) && (PN5180_MISO > 0) && (PN5180_MOSI > 0)) {
+    // start SPI with custom pins
+    PN5180_SPI.begin(PN5180_SCK, PN5180_MISO, PN5180_MOSI, PN5180_NSS);
+    PN5180DEBUG(F("Custom SPI pinout: "));
+    PN5180DEBUG(F("SS=")); PN5180DEBUG(PN5180_NSS);
+    PN5180DEBUG(F(", MOSI=")); PN5180DEBUG(PN5180_MOSI);
+    PN5180DEBUG(F(", MISO=")); PN5180DEBUG(PN5180_MISO);
+    PN5180DEBUG(F(", SCK=")); PN5180DEBUG(PN5180_SCK);
+  } else {
+    // start SPI with default pINs
+    PN5180_SPI.begin();
+    PN5180DEBUG(F("Default SPI pinout: "));
+    PN5180DEBUG(F("SS=")); PN5180DEBUG(SS);
+    PN5180DEBUG(F(", MOSI=")); PN5180DEBUG(MOSI);
+    PN5180DEBUG(F(", MISO=")); PN5180DEBUG(MISO);
+    PN5180DEBUG(F(", SCK=")); PN5180DEBUG(SCK);
+  }
   PN5180DEBUG("\n");
 }
 
diff --git a/README.md b/README.md
index d24c1e5..011bb14 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,10 @@ Arduino Uno / Arduino ESP-32 library for PN5180-NFC Module from NXP Semiconducto
 
 Release Notes:
 
+Version 2.3.3 - 27.10.2024
+
+	* Bugfix start with default SPI
+	
 Version 2.3.2 - 27.10.2024
 
 	* Allow to use custom spi pins #12, thanks to @mjmeans !