diff --git a/m4/ax_cuda.m4 b/m4/ax_cuda.m4
index f9d9f8e..82646b0 100644
--- a/m4/ax_cuda.m4
+++ b/m4/ax_cuda.m4
@@ -88,17 +88,9 @@ then
 	# test if nvcc version is >= 2.3
 	NVCC_VERSION=`$NVCC --version | grep release | awk 'gsub(/,/, "") {print [$]5}'`
 	AC_MSG_RESULT([nvcc version : $NVCC_VERSION])
-	
+
 	# test if architecture is 64 bits and NVCC version >= 2.3
         libdir=lib
-        AX_COMPARE_VERSION([$NVCC_VERSION],[gt],[2.2],[
-	    if test "x$host_cpu" = xx86_64 ; then
-	        libdir=lib64
-	    fi
-	    if test "x$host_cpu" = xpowerpc64le ; then
-	        libdir=lib64
-	    fi
-	])
 
 	# set CUDA flags
 	if test -n "$cuda_home_path"
@@ -163,7 +155,7 @@ then
 
 	CPPFLAGS=$saved_CPPFLAGS
 	LIBS=$saved_LIBS
-fi	
+fi
 
 have_cuda="no"
 if test "$want_cuda" != "no" -a "$have_cuda_headers" = "yes" -a "$have_cuda_libs" = "yes" -a "$have_nvcc" = "yes"