diff --git a/src/ecezo/ecezo.c b/src/ecezo/ecezo.c
index 6a195fc1..55e95716 100644
--- a/src/ecezo/ecezo.c
+++ b/src/ecezo/ecezo.c
@@ -488,7 +488,7 @@ int ecezo_send_command(const ecezo_context dev, char *cmd, char *buffer,
     // our write buffer
     char writeBuffer[ECEZO_MAX_BUFFER_LEN];
 
-    strncpy(writeBuffer, cmd, ECEZO_MAX_BUFFER_LEN);
+    memcpy(writeBuffer, cmd, ECEZO_MAX_BUFFER_LEN - 1);
     writeBuffer[ECEZO_MAX_BUFFER_LEN - 1] = 0;
 
     int writelen = strlen(writeBuffer);
diff --git a/src/kx122/kx122.h b/src/kx122/kx122.h
index 1622ed50..56e5215e 100644
--- a/src/kx122/kx122.h
+++ b/src/kx122/kx122.h
@@ -31,6 +31,7 @@ extern "C"{
 #include <assert.h>
 #include <unistd.h>
 #include <math.h>
+#include <sys/types.h>
 
 #include <mraa/i2c.h>
 #include <mraa/spi.h>
diff --git a/src/rn2903/rn2903.c b/src/rn2903/rn2903.c
index f30a33ae..01a011da 100644
--- a/src/rn2903/rn2903.c
+++ b/src/rn2903/rn2903.c
@@ -150,7 +150,7 @@ static rn2903_context _rn2903_postinit(rn2903_context dev,
         rn2903_close(dev);
         return NULL;
     }
-    strncpy(dev->hardware_eui, dev->resp_data, RN2903_MAX_HEX_EUI64);
+    memcpy(dev->hardware_eui, dev->resp_data, RN2903_MAX_HEX_EUI64);
 
     return dev;
 }