diff --git a/Transceiver52M/USRPDevice.cpp b/Transceiver52M/USRPDevice.cpp
index 275f1c4..3a61e64 100644
--- a/Transceiver52M/USRPDevice.cpp
+++ b/Transceiver52M/USRPDevice.cpp
@@ -105,11 +105,9 @@ int USRPDevice::open(const std::string &)
                                         0, decimRate * sps, 1, -1,
                                         usrp_standard_rx::FPGA_MODE_NORMAL,
                                         1024, 16 * 8, rbf));
-#ifdef HAVE_LIBUSRP_3_2
     m_uRx->set_fpga_master_clock_freq(masterClockRate);
-#endif
   }
-  
+
   catch(...) {
     LOG(ALERT) << "make failed on Rx";
     m_uRx.reset();
@@ -129,11 +127,9 @@ int USRPDevice::open(const std::string &)
     m_uTx = usrp_standard_tx_sptr(usrp_standard_tx::make(
                                         0, decimRate * 2, 1, -1,
                                         1024, 16 * 8, rbf));
-#ifdef HAVE_LIBUSRP_3_2
     m_uTx->set_fpga_master_clock_freq(masterClockRate);
-#endif
   }
-  
+
   catch(...) {
     LOG(ALERT) << "make failed on Tx";
     m_uTx.reset();
diff --git a/Transceiver52M/USRPDevice.h b/Transceiver52M/USRPDevice.h
index 01cf261..f74db47 100644
--- a/Transceiver52M/USRPDevice.h
+++ b/Transceiver52M/USRPDevice.h
@@ -21,29 +21,17 @@
 
 #include "radioDevice.h"
 
-#ifdef HAVE_LIBUSRP_3_3 // [
-#  include <usrp/usrp_standard.h>
-#  include <usrp/usrp_bytesex.h>
-#  include <usrp/usrp_prims.h>
-#else // HAVE_LIBUSRP_3_3 ][
-#  include "usrp_standard.h"
-#  include "usrp_bytesex.h"
-#  include "usrp_prims.h"
-#endif // !HAVE_LIBUSRP_3_3 ]
+#include <usrp/usrp_standard.h>
+#include <usrp/usrp_bytesex.h>
+#include <usrp/usrp_prims.h>
 #include <sys/time.h>
 #include <math.h>
 #include <string>
 #include <iostream>
 
-
-/** Define types which are not defined in libusrp-3.1 */
-#ifndef HAVE_LIBUSRP_3_2
 #include <boost/shared_ptr.hpp>
 typedef boost::shared_ptr<usrp_standard_tx> usrp_standard_tx_sptr;
 typedef boost::shared_ptr<usrp_standard_rx> usrp_standard_rx_sptr;
-#endif // HAVE_LIBUSRP_3_2
-
-
 
 /** A class to handle a USRP rev 4, with a two RFX900 daughterboards */
 class USRPDevice: public RadioDevice {
diff --git a/configure.ac b/configure.ac
index fa60f0e..c3d3fb0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -76,18 +76,7 @@ AC_ARG_WITH(extref, [
 ])
 
 AS_IF([test "x$with_usrp1" = "xyes"], [
-    # Defines USRP_CFLAGS, USRP_INCLUDEDIR, and USRP_LIBS
-    PKG_CHECK_MODULES(USRP, usrp > 3.1)
-    # Check whether we have libusrp >= 3.2
-    PKG_CHECK_EXISTS(usrp >= 3.2, libusrp_3_2=yes, libusrp_3_2=no)
-    if test "x$libusrp_3_2" = "xyes";then
-        AC_DEFINE(HAVE_LIBUSRP_3_2, 1, Define to 1 if you have libusrp >= 3.2)
-    fi
-    # Check whether we have libusrp >= 3.3
-    PKG_CHECK_EXISTS(usrp >= 3.3, libusrp_3_3=yes, libusrp_3_3=no)
-    if test "x$libusrp_3_3" = "xyes";then
-        AC_DEFINE(HAVE_LIBUSRP_3_3, 1, Define to 1 if you have libusrp >= 3.3)
-    fi
+    PKG_CHECK_MODULES(USRP, usrp >= 3.3)
     # Find and define supported SIMD extensions
     AX_EXT
 ])