diff --git a/gpio/gpio.c b/gpio/gpio.c
index 79428f1..f852562 100755
--- a/gpio/gpio.c
+++ b/gpio/gpio.c
@@ -309,13 +309,13 @@ static void doLoad (int argc, char *argv [])
   if (!moduleLoaded (module1))
   {
     sprintf (cmd, "%s %s%s", findExecutable (MODPROBE), module1, args1) ;
-    system (cmd) ;
+    if ( system (cmd) ){;}
   }
 
   if (!moduleLoaded (module2))
   {
     sprintf (cmd, "%s %s%s", findExecutable (MODPROBE), module2, args2) ;
-    system (cmd) ;
+    if ( system (cmd) ){;}
   }
 
   if (!moduleLoaded (module2))
@@ -369,13 +369,13 @@ static void doUnLoad (int argc, char *argv [])
   if (moduleLoaded (module1))
   {
     sprintf (cmd, "%s %s", findExecutable (RMMOD), module1) ;
-    system (cmd) ;
+    if ( system (cmd) ){;}
   }
 
   if (moduleLoaded (module2))
   {
     sprintf (cmd, "%s %s", findExecutable (RMMOD), module2) ;
-    system (cmd) ;
+    if ( system (cmd) ){;}
   }
 }
 
@@ -1428,7 +1428,7 @@ static void doVersion (char *argv [])
   {
     if ((fd = fopen ("/proc/device-tree/model", "r")) != NULL)
     {
-      fgets (name, 80, fd) ;
+      if ( fgets (name, 80, fd) ){;}
       fclose (fd) ;
       printf ("  *--> %s\n", name) ;
     }
diff --git a/wiringPi/drcNet.c b/wiringPi/drcNet.c
index 0964ff7..3c01cf2 100644
--- a/wiringPi/drcNet.c
+++ b/wiringPi/drcNet.c
@@ -104,7 +104,7 @@ static int authenticate (int fd, const char *pass)
 {
   char *challenge ;
   char *encrypted ;
-  char salted [1024] ;
+  char salted [1034] ;
 
   if ((challenge = getChallenge (fd)) == NULL)
     return -1 ;
diff --git a/wiringPi/mcp3422.c b/wiringPi/mcp3422.c
index be14db6..12eba1a 100644
--- a/wiringPi/mcp3422.c
+++ b/wiringPi/mcp3422.c
@@ -47,7 +47,7 @@ void waitForConversion (int fd, unsigned char *buffer, int n)
 {
   for (;;)
   {
-    read (fd, buffer, n) ;
+    if ( read (fd, buffer, n) ){;}
     if ((buffer [n-1] & 0x80) == 0)
       break ;
     delay (1) ;
diff --git a/wiringPi/pcf8591.c b/wiringPi/pcf8591.c
index 7e06c13..de5f51f 100644
--- a/wiringPi/pcf8591.c
+++ b/wiringPi/pcf8591.c
@@ -41,7 +41,8 @@ static void myAnalogWrite (struct wiringPiNodeStruct *node, UNU int pin, int val
   unsigned char b [2] ;
   b [0] = 0x40 ;
   b [1] = value & 0xFF ;
-  write (node->fd, b, 2) ;
+  if ( write (node->fd, b, 2) ){;}
+
 }
 
 /*