diff --git a/src/SD.cpp b/src/SD.cpp
index fbadb62..63e9f05 100644
--- a/src/SD.cpp
+++ b/src/SD.cpp
@@ -353,7 +353,9 @@ boolean SDClass::begin(uint32_t clock, uint8_t csPin) {
   if(root.isOpen()) root.close();
 
   return card.init(SPI_HALF_SPEED, csPin) &&
+#ifdef USE_SPI_LIB
          card.setSpiClock(clock) &&
+#endif
          volume.init(card) &&
          root.openRoot(volume);
 }
diff --git a/src/utility/Sd2Card.cpp b/src/utility/Sd2Card.cpp
index 406f838..26cb15a 100644
--- a/src/utility/Sd2Card.cpp
+++ b/src/utility/Sd2Card.cpp
@@ -17,7 +17,6 @@
  * along with the Arduino Sd2Card Library.  If not, see
  * <http://www.gnu.org/licenses/>.
  */
-#define USE_SPI_LIB
 #include <Arduino.h>
 #include "Sd2Card.h"
 //------------------------------------------------------------------------------
diff --git a/src/utility/Sd2Card.h b/src/utility/Sd2Card.h
index 9c3faff..e005c5d 100644
--- a/src/utility/Sd2Card.h
+++ b/src/utility/Sd2Card.h
@@ -48,6 +48,7 @@ uint8_t const SPI_QUARTER_SPEED = 2;
 //------------------------------------------------------------------------------
 #if MEGA_SOFT_SPI && (defined(__AVR_ATmega1280__)||defined(__AVR_ATmega2560__))
 #define SOFTWARE_SPI
+#undef USE_SPI_LIB
 #endif  // MEGA_SOFT_SPI
 //------------------------------------------------------------------------------
 // SPI pin definitions