diff --git a/crypto/3des/3des-file-encrypt.c b/crypto/3des/3des-file-encrypt.c
index a5c17a5d..e589b15c 100644
--- a/crypto/3des/3des-file-encrypt.c
+++ b/crypto/3des/3des-file-encrypt.c
@@ -283,7 +283,7 @@ int main(int argc, char** argv)
 {
     Des3   des3;
     byte*  key;       /* user entered key */
-    FILE*  inFile;
+    FILE*  inFile = NULL;
     FILE*  outFile = NULL;
 
     const char* in;
diff --git a/crypto/camellia/camellia-encrypt.c b/crypto/camellia/camellia-encrypt.c
index 93441f9d..534063f3 100644
--- a/crypto/camellia/camellia-encrypt.c
+++ b/crypto/camellia/camellia-encrypt.c
@@ -279,7 +279,7 @@ int main(int argc, char** argv)
 {
     Camellia   cam;
     byte*  key;       /* user entered key */
-    FILE*  inFile;
+    FILE*  inFile = NULL;
     FILE*  outFile = NULL;
 
     const char* in;
diff --git a/dtls/server-dtls-callback.c b/dtls/server-dtls-callback.c
index 5fcb29d5..25de6733 100644
--- a/dtls/server-dtls-callback.c
+++ b/dtls/server-dtls-callback.c
@@ -326,6 +326,7 @@ int main(int argc, char** argv)
 
         /* echo until shutdown received */
         while (cleanup == 0 && ret == 0) {
+            buffLen = 0;
             ret = wolfSSL_read(ssl, buff, sizeof(buff)-1);
             if (ret > 0) {
                 printf("heard %d bytes\n", ret);
diff --git a/dtls/server-dtls-nonblocking.c b/dtls/server-dtls-nonblocking.c
index 8dc40509..5e674d2b 100644
--- a/dtls/server-dtls-nonblocking.c
+++ b/dtls/server-dtls-nonblocking.c
@@ -86,7 +86,7 @@ int main(int argc, char** argv)
     /* NonBlockingSSL_Accept variables */
     int           ret;
     int           select_ret;
-    int           currTimeout;
+    int           currTimeout = 0;
     int           error;
     int           result;
     int           nfds;
@@ -123,7 +123,7 @@ int main(int argc, char** argv)
         return 1;
     }
     /* Load server certificates */
-    if (wolfSSL_CTX_use_certificate_file(ctx, servCertLoc, SSL_FILETYPE_PEM) != 
+    if (wolfSSL_CTX_use_certificate_file(ctx, servCertLoc, SSL_FILETYPE_PEM) !=
             SSL_SUCCESS) {
         printf("Error loading %s, please check the file.\n", servCertLoc);
         return 1;
@@ -188,6 +188,7 @@ int main(int argc, char** argv)
         printf("Awaiting client connection on port %d\n", SERV_PORT);
 
         /* UDP-read-connect */
+        bytesRecvd = 0;
         do {
             if (cleanup == 1) {
                 cont = 1;
@@ -256,6 +257,7 @@ int main(int argc, char** argv)
 
             result = select(nfds, &recvfds, NULL, &errfds, &timeout);
 
+            select_ret = TEST_SELECT_FAIL;
             if (result == 0) {
                 select_ret = TEST_TIMEOUT;
             }
@@ -267,9 +269,6 @@ int main(int argc, char** argv)
                     select_ret = TEST_ERROR_READY;
                 }
             }
-            else {
-                select_ret = TEST_SELECT_FAIL;
-            }
 
             if ((select_ret == TEST_RECV_READY) ||
                 (select_ret == TEST_ERROR_READY)) {
@@ -305,6 +304,7 @@ int main(int argc, char** argv)
         recvLen = wolfSSL_read(ssl, buff, sizeof(buff)-1);
 
         /* Begin do-while read */
+        readWriteErr = 0;
         do {
             if (cleanup == 1) {
                 memset(buff, 0, sizeof(buff));