diff --git a/activity_monitor.c b/activity_monitor.c
index 697bec95..ad0c528f 100644
--- a/activity_monitor.c
+++ b/activity_monitor.c
@@ -170,7 +170,6 @@ void *activity_monitor_thread_code(void *arg) {
 
   uint64_t sec;
   uint64_t nsec;
-  int rc;
   struct timespec time_for_wait;
 
   state = am_inactive;
diff --git a/common.c b/common.c
index d8be92a4..6bd31524 100644
--- a/common.c
+++ b/common.c
@@ -450,7 +450,7 @@ char *base64_enc(uint8_t *input, int length) {
   b64 = BIO_push(b64, bmem);
   BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
   BIO_write(b64, input, length);
-  BIO_flush(b64);
+  (void) BIO_flush(b64);
   BIO_get_mem_ptr(b64, &bptr);
 
   char *buf = (char *)malloc(bptr->length);
@@ -482,7 +482,7 @@ uint8_t *base64_dec(char *input, int *outlen) {
   BIO_write(bmem, input, inlen);
   while (inlen++ & 3)
     BIO_write(bmem, "=", 1);
-  BIO_flush(bmem);
+  (void) BIO_flush(bmem);
 
   int bufsize = strlen(input) * 3 / 4 + 1;
   uint8_t *buf = malloc(bufsize);
diff --git a/shairport.c b/shairport.c
index 2bea884f..7cb2c39a 100644
--- a/shairport.c
+++ b/shairport.c
@@ -31,7 +31,6 @@
 #include <libconfig.h>
 #include <libgen.h>
 #include <memory.h>
-#include <net/if.h>
 #include <popt.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -39,6 +38,7 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <net/if.h>
 #include <unistd.h>
 
 #include "config.h"
diff --git a/tinysvcmdns.c b/tinysvcmdns.c
index bdce032c..d0cbebb8 100644
--- a/tinysvcmdns.c
+++ b/tinysvcmdns.c
@@ -416,7 +416,7 @@ int rr_list_append(struct rr_list **rr_head, struct rr_entry *rr) {
     if (*rr_head == NULL) {
       *rr_head = node;
     } else {
-      struct rr_list *e = *rr_head, *taile;
+      struct rr_list *e = *rr_head, *taile = NULL;
       for (; e; e = e->next) {
         // already in list - don't add
         if (e->e == rr) {
@@ -426,7 +426,10 @@ int rr_list_append(struct rr_list **rr_head, struct rr_entry *rr) {
         if (e->next == NULL)
           taile = e;
       }
-      taile->next = node;
+      if (taile)
+        taile->next = node;
+      else
+        DEBUG_PRINTF("taile not given a value.\n");
     }
   } else {
     die("can not allocate memory for \"node\" in tinysvcmdns.");
@@ -500,7 +503,7 @@ struct rr_entry *rr_create(uint8_t *name, enum rr_type type) {
 }
 
 void rr_set_nsec(struct rr_entry *rr_nsec, enum rr_type type) {
-  assert(rr_nsec->type = RR_NSEC);
+  assert((rr_nsec->type = RR_NSEC));
   assert((type / 8) < sizeof(rr_nsec->data.NSEC.bitmap));
 
   rr_nsec->data.NSEC.bitmap[type / 8] = 1 << (7 - (type % 8));