diff --git a/network/http.c b/network/http.c
index 14e7e68..2342785 100644
--- a/network/http.c
+++ b/network/http.c
@@ -41,7 +41,7 @@ mime_type types[] = {
 	{".", "text/plain"}
 };
 
-void format_size(char *buf, struct stat *stat) {
+static void format_size(char *buf, struct stat *stat) {
 	bzero(buf, strlen(buf));
 	if (S_ISDIR(stat->st_mode)) {
 		sprintf(buf, "%s", "DIR");
@@ -58,12 +58,12 @@ void format_size(char *buf, struct stat *stat) {
 	}
 }
 
-void error(char *msg) {
+static void error(char *msg) {
 	perror(msg);
 	exit(1);
 }
 
-void cerror(FILE *stream, char *cause, char *errno, char *shortm, char *longm) {
+static void cerror(FILE *stream, char *cause, char *errno, char *shortm, char *longm) {
 	fprintf(stream, "HTTP/1.1 %s %s\n", errno, shortm);
 	fprintf(stream, "Content-Type: text/html\n");
 	fprintf(stream, "\n");
@@ -75,9 +75,11 @@ void cerror(FILE *stream, char *cause, char *errno, char *shortm, char *longm) {
 	fprintf(stream, "<hr color=\"white\"/><em>Web Server</em></body></html>\n");
 }
 
-void serve_file(FILE *stream, struct stat *stat, char *filename) {
+static void serve_file(FILE *stream, struct stat *stat, char *filename) {
 	char *p;
-	char filetype[BUFSIZE];
+	//char filetype[BUFSIZE];
+	char *filetype;
+	filetype = (char *)malloc(BUFSIZE);
 	for (int z = 0; z < sizeof(types); z++) {
 		if (strstr(filename, types[z].extension)) {
 			strcpy(filetype, types[z].type);
@@ -99,9 +101,10 @@ void serve_file(FILE *stream, struct stat *stat, char *filename) {
 	fwrite(p, 1, stat->st_size, stream);
 	munmap(p, stat->st_size);
 	close(fd);
+	free(filetype);
 }
 
-void serve_directory(int cfd, char *filename) {
+static void serve_directory(int cfd, char *filename) {
 	char buf[BBUFSIZE];
 	
 	sprintf(buf, "HTTP/1.1 200 OK\r\n%s%s%s%s%s%s%s%s",
diff --git a/point/bitfield.c b/point/bitfield.c
index 7bac4ae..a495e1d 100644
--- a/point/bitfield.c
+++ b/point/bitfield.c
@@ -30,15 +30,15 @@ const char *months[] = {
 	"December"
 };
 
-void print_big_date(DateBig *date) {
+static void print_big_date(DateBig *date) {
 	printf("%s %d, %d\n\n", months[(date->month)-1], date->day, date->year);
 }
 
-void print_date(DateSmall *date) {
+static void print_date(DateSmall *date) {
 	printf("%s %d, %d\n\n", months[(date->month)-1], date->day, date->year);
 }
 
-int make_big_date(DateBig *out) {
+static int make_big_date(DateBig *out) {
 	unsigned int m, d, y;
 	printf("Making big date\n");
 	printf("Enter month: ");
@@ -65,7 +65,7 @@ int make_big_date(DateBig *out) {
 	return 0;
 }
 
-int make_date(DateSmall *out) {
+static int make_date(DateSmall *out) {
 	unsigned int m, d, y;
 	printf("Making small date\n");
 	printf("Enter month: ");
diff --git a/point/hashmap.c b/point/hashmap.c
index 4bee489..cc5311a 100644
--- a/point/hashmap.c
+++ b/point/hashmap.c
@@ -9,7 +9,7 @@ typedef struct {
 	int value;
 } item;
 
-item *linear_search(item *items, size_t size, const char *key) {
+static item *linear_search(item *items, size_t size, const char *key) {
 	for (size_t i = 0; i < size; i++) {
 		if (strcmp(items[i].key, key) == 0) {
 			return &items[i];
diff --git a/point/linkpop.c b/point/linkpop.c
index 33d58c6..70a96e9 100644
--- a/point/linkpop.c
+++ b/point/linkpop.c
@@ -9,7 +9,7 @@ typedef struct node {
 } node_t;
 
 /* Print the linked list */
-void print_list(node_t *h) {
+static void print_list(node_t *h) {
 	node_t *current;
 
 	for (current = h; current != NULL; current = current->next) {
@@ -18,7 +18,7 @@ void print_list(node_t *h) {
 }
 
 /* New push function, inserts at beginning instead of end */
-int push(node_t **h, int val) {
+static int push(node_t **h, int val) {
 	/* This **h is a double pointer */
 	if (*h == NULL) {
 		return 1;
@@ -38,7 +38,7 @@ int push(node_t **h, int val) {
 }
 
 /* Remove from beginning of list, and return stored value */
-int pop(node_t **h) {
+static int pop(node_t **h) {
 	int ret = -1;
 	node_t *next = NULL;
 
diff --git a/point/linkpush.c b/point/linkpush.c
index afbea9b..596f989 100644
--- a/point/linkpush.c
+++ b/point/linkpush.c
@@ -8,7 +8,7 @@ typedef struct node {
 	struct node *next;
 } node_t;
 
-void print_list(node_t *h) {
+static void print_list(node_t *h) {
 	node_t *current = h;
 
 	while (current != NULL) {
@@ -18,7 +18,7 @@ void print_list(node_t *h) {
 }
 
 /* Push a node to the end of the list with value val */
-void push(node_t *h, int v) {
+static void push(node_t *h, int v) {
 	node_t *current = h;
 	while (current->next != NULL)
 		current = current->next;
diff --git a/thread/async.cpp b/thread/async.cpp
index b8c11d9..92832a4 100644
--- a/thread/async.cpp
+++ b/thread/async.cpp
@@ -6,11 +6,11 @@
 #include <string>
 #include <thread>
 
-void callback(const std::string& data) {
+static void callback(const std::string& data) {
 	std::cout << "Callback called with: " << data << std::endl;
 }
 
-void task(int time) {
+static void task(int time) {
 	std::this_thread::sleep_for(std::chrono::seconds(time));
 	callback("async task done");
 }
diff --git a/thread/mutex.cpp b/thread/mutex.cpp
index 0f25f43..a8d404b 100644
--- a/thread/mutex.cpp
+++ b/thread/mutex.cpp
@@ -34,7 +34,7 @@ struct tcout {
 };
 std::mutex tcout::mutex;
 
-void addJobs(void) {
+static void addJobs(void) {
     static int num = 0;
     job current = { num++ };
     std::unique_lock<std::mutex> lock(*jobMutex);
@@ -46,7 +46,7 @@ void addJobs(void) {
 
 /* Pass the parameter by giving another argument
  * to the thread constructor */
-void work(int seconds) {
+static void work(int seconds) {
     job current;
     threadsRunning++;
     while (true) {
diff --git a/thread/thread.cpp b/thread/thread.cpp
index ef6f432..8388720 100644
--- a/thread/thread.cpp
+++ b/thread/thread.cpp
@@ -4,7 +4,7 @@
 #include <vector>
 using namespace std;
 
-void print(int n, const string &str) {
+static void print(int n, const string &str) {
     string msg = to_string(n) + " : " + str;
     cout << msg << endl;
 }
@@ -26,3 +26,4 @@ int main(void) {
         th.join();
     return 0;
 }
+