diff --git a/devel/lpc21isp/Makefile b/devel/lpc21isp/Makefile
index 63ea54cd0..fbba20812 100644
--- a/devel/lpc21isp/Makefile
+++ b/devel/lpc21isp/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=lpc21isp
 PKG_VERSION:=197
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 PKG_LICENSE:=LGPL-3.0-or-later
 PKG_LICENSE_FILES:=README gpl.txt lgpl-3.0.txt
 
diff --git a/devel/lpc21isp/patches/110-bzero.patch b/devel/lpc21isp/patches/110-bzero.patch
new file mode 100644
index 000000000..0ae6818c3
--- /dev/null
+++ b/devel/lpc21isp/patches/110-bzero.patch
@@ -0,0 +1,11 @@
+--- a/lpc21isp.c
++++ b/lpc21isp.c
+@@ -533,7 +533,7 @@ static void OpenSerialPort(ISP_ENVIRONMENT *IspEnvironment)
+ 
+     tcgetattr(IspEnvironment->fdCom, &IspEnvironment->oldtio); /* save current port settings */
+ 
+-    bzero(&IspEnvironment->newtio, sizeof(IspEnvironment->newtio));
++    memset(&IspEnvironment->newtio, 0, sizeof(IspEnvironment->newtio));
+     IspEnvironment->newtio.c_cflag = CS8 | CLOCAL | CREAD;
+ 
+ #if defined(__FreeBSD__) || defined(__OpenBSD__)
diff --git a/devel/lpc21isp/patches/120-nanosleep.patch b/devel/lpc21isp/patches/120-nanosleep.patch
new file mode 100644
index 000000000..02949aef8
--- /dev/null
+++ b/devel/lpc21isp/patches/120-nanosleep.patch
@@ -0,0 +1,12 @@
+--- a/lpc21isp.c
++++ b/lpc21isp.c
+@@ -1130,7 +1130,8 @@ void ClearSerialPortBuffers(ISP_ENVIRONMENT *IspEnvironment)
+ */
+ void Sleep(unsigned long MilliSeconds)
+ {
+-    usleep(MilliSeconds*1000); //convert to microseconds
++    struct timespec m = { MilliSeconds / 1000 , (MilliSeconds % 1000 ) * 1000 * 1000};
++    nanosleep(&m, &m); //convert to nanoseconds
+ }
+ #endif // defined COMPILE_FOR_LINUX
+