diff --git a/dir.c b/dir.c
index 264c927..d8fca23 100644
--- a/dir.c
+++ b/dir.c
@@ -54,7 +54,7 @@ unsigned long get_dir_size(char *path){
 }
 
 void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_content){
-	struct dirent **entry;
+	struct dirent **entry = NULL;
 	if (file_modifiers & FILE_MODIFIERS_HIDDEN_FILES) { /* print hidden files */
 		scandir(path, &entry, skip_dot, NULL);
 	} else {
@@ -147,7 +147,10 @@ void get_dir_content(char *path, unsigned long *dir_file_count, file *dir_conten
 	for (i = 0; i < *dir_file_count; i++) {
 		free(entry[i]);
 	}
-	free(entry);
+	if (entry != NULL) {
+		free(entry);
+	} else {
+	}
 
 }
 
@@ -243,7 +246,7 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 		 * example input: aaaaaaaa.txt
 		 * example output: aaa~.txt
 		 * if no extension is found, the name will truncate */
-		char *file_name;
+		char *file_name = NULL;
 		unsigned long printable_size = (offset_back - is_selected - offset_front);
 		if (strlen(dir_content[i].file_name) > printable_size) {
 			char *extension = strrchr(dir_content[i].file_name, '.');
@@ -312,8 +315,14 @@ void print_dir(WINDOW *win, char print_info, unsigned long *dir_file_count, file
 		} else {
 			mvwaddnstr(win, i-offset_vertical, 0, file_name, line_width);
 		}
-		free(file_name);
-
+		if (file_name != NULL) {
+			/* sometimes NULL remains, need to do deeper analysis soon */
+			free(file_name);
+		} else {
+			printf("file_name remains NULL on %s, if this happens consistent on the same file, please inform me", dir_content[i].file_name);
+			volatile static int debug_print_dir;
+			debug_print_dir++;
+		}
 		if (dir_content[i].status & FILE_STATUS_SELECTED) {
 			wattroff(win, COLOR_PAIR(8));
 		} else {
diff --git a/interactions.c b/interactions.c
index 59f385a..7b443f1 100644
--- a/interactions.c
+++ b/interactions.c
@@ -46,7 +46,6 @@ int parsed_input_number;
 yank yank_files = { 0 };
 
 int read_string(WINDOW *win, int y, int x, char *str);
-int strcmp_offset(char *in0, char *in1, char offset);
 extern void render_pass();
 extern int (*order_func)();
 
@@ -70,7 +69,7 @@ void user_interactions() {
 
 	ch = getch();
 	if(ch != ERR) {
-		timeout(1); /* blocking timeout of getch() */
+		timeout(10); /* blocking timeout of getch() */
 		input[input_pass] = ch;
 		mvaddstr(terminal_height-1, (terminal_width/3)*2, input);
 		input_pass++;
@@ -83,6 +82,8 @@ void user_interactions() {
 		}
 		binding_pass = 0;
 		status |= STATUS_UPDATE_SCREEN_0;
+	} else {
+		timeout(100);
 	}
 
 
@@ -119,7 +120,7 @@ void user_interactions() {
 		}
 		if (status & STATUS_INPUT_MATCH) {
 			attron(A_UNDERLINE);
-			mvaddstr(terminal_height-binding_matches-2, 0, "input\tcommand\t\t");
+			mvwprintw(stdscr, terminal_height-binding_matches-2, 0, "input\tcommand\t\t");
 			attroff(A_UNDERLINE);
 			status &= ~STATUS_INPUT_MATCH;
 		} else if (number_length != strlen(input)) {
@@ -172,19 +173,6 @@ int read_string(WINDOW *win, int y, int x, char *str){
 
 	return err;
 }
-int strcmp_offset(char *in0, char *in1, char offset){
-
-	int i = 0;
-	while (in0[i] != '\0' && in1[i] != '\0') {
-		if (in0[i+offset] != in1[i]) {
-			return 1;
-		}
-		i++;
-		in1++;
-	}
-	return 0;
-
-}
 void quit_program(){
 	status = STATUS_QUIT_PROGRAM;
 }
diff --git a/threading.c b/threading.c
index f9f76a8..b96c0ca 100644
--- a/threading.c
+++ b/threading.c
@@ -247,7 +247,7 @@ void *thread_top(){
 	pthread_exit(0);
 }
 void *thread_btm(){
-	char *path = malloc(sizeof(char));
+	char *path = NULL;
 	char *ui_btm_right_block = malloc(sizeof(char));
 	unsigned int ui_btm_right_block_size = 0;
 	unsigned int buffer_width = 0;
@@ -271,7 +271,14 @@ void *thread_btm(){
 			pthread_mutex_unlock(&mutex_mid);
 
 
-			free(path);
+			if (path != NULL) {
+				/* sometimes NULL remains, need to do deeper analysis soon */
+				free(path);
+				path = NULL;
+			} else {
+				volatile static int debug_thread_btm;
+				debug_thread_btm++;
+			}
 			free(ui_btm_right_block);
 
 			path = getcwd(NULL, 0);