diff --git a/src_main/io/pican.cpp b/src_main/io/pican.cpp
index 4b94b992..a124d279 100644
--- a/src_main/io/pican.cpp
+++ b/src_main/io/pican.cpp
@@ -74,8 +74,9 @@ bool PICAN::closeDevice() {
 
 int PICAN::readDevice(void * read_to, int max_size) {
 #ifdef PIP_CAN
+	can_frame frame;
 	int ret = 0;
-	ret = read(sock, &frame, sizeof(can_frame));
+	ret = ::read(sock, &frame, sizeof(can_frame));
 	if(ret < 0) {piCoutObj << "Error while read CAN frame " << ret; return -1;}
 	piCoutObj << "receive CAN frame Id =" << frame.can_id;
 	memcpy(read_to, frame.data, piMini(frame.can_dlc, max_size));
@@ -93,7 +94,7 @@ int PICAN::writeDevice(const void * data, int max_size) {
 	frame.can_dlc = max_size;
 	memcpy(frame.data, data, max_size);
 	int ret = 0;
-	ret = write(sock, &frame, sizeof(can_frame));
+	ret = ::write(sock, &frame, sizeof(can_frame));
 	if(ret < 0) {piCoutObj << "Error while send CAN frame " << ret; return -1;}
 	return max_size;
 #endif