diff --git a/module/keyboard.cpp b/module/keyboard.cpp
index 9afb8c9..14a4257 100644
--- a/module/keyboard.cpp
+++ b/module/keyboard.cpp
@@ -10,22 +10,19 @@
 #ifndef _WIN32
 static struct termios init_termios;
 static struct termios new_termios;
-static int peek_character=-1;
+static int peek_char=-1;
 
 int kbhit(){
     unsigned char ch=0;
     int nread=0;
-    if(peek_character!=-1)
+    if(peek_char!=-1)
         return 1;
     int flag=fcntl(0,F_GETFL);
-    flag|=O_NONBLOCK;
-    fcntl(0,F_SETFL,flag);
+    fcntl(0,F_SETFL,flag|O_NONBLOCK);
     nread=read(0,&ch,1);
-    flag&=(~O_NONBLOCK);
     fcntl(0,F_SETFL,flag);
-    if(nread==1)
-    {
-        peek_character=ch;
+    if(nread==1){
+        peek_char=ch;
         return 1;
     }
     return 0;
@@ -33,10 +30,9 @@ int kbhit(){
 
 int getch(){
     int ch=0;
-    if(peek_character!=-1)
-    {
-        ch=peek_character;
-        peek_character=-1;
+    if(peek_char!=-1){
+        ch=peek_char;
+        peek_char=-1;
         return ch;
     }
     read(0,&ch,1);
@@ -57,10 +53,13 @@ extern "C" nasal_ref nas_noblock(std::vector<nasal_ref>& args,nasal_gc& gc){
 }
 extern "C" nasal_ref nas_init(std::vector<nasal_ref>& args,nasal_gc& gc){
 #ifndef _WIN32
+    tcflush(0,TCIOFLUSH);
     tcgetattr(0,&init_termios);
     new_termios=init_termios;
     new_termios.c_lflag&=~(ICANON|ECHO|ECHONL);
-    new_termios.c_cc[VMIN]=0;
+    // vmin=0 is nonblock input, but in wsl there is a bug that will block input
+    // so we use fcntl to write the nonblock input
+    new_termios.c_cc[VMIN]=1;
     new_termios.c_cc[VTIME]=0;
     tcsetattr(0,TCSANOW,&new_termios);
 #endif
@@ -68,8 +67,8 @@ extern "C" nasal_ref nas_init(std::vector<nasal_ref>& args,nasal_gc& gc){
 }
 extern "C" nasal_ref nas_close(std::vector<nasal_ref>& args,nasal_gc& gc){
 #ifndef _WIN32
-    tcsetattr(0,TCSANOW,&init_termios);
     tcflush(0,TCIOFLUSH);
+    tcsetattr(0,TCSANOW,&init_termios);
 #endif
     return nil;
 }
\ No newline at end of file
diff --git a/test/tetris.nas b/test/tetris.nas
index b030590..f743401 100644
--- a/test/tetris.nas
+++ b/test/tetris.nas
@@ -260,6 +260,8 @@ var main=func(){
     # windows use chcp 65001 to output unicode
     if(os.platform()=="windows")
         system("chcp 65001");
+    
+    libkey.init();
     print(
         "\ec\e[1:1H",
         "+-------------------------+\n",
@@ -275,7 +277,6 @@ var main=func(){
     rand(time(0));
     var map=mapgen(mapx:12,mapy:15);
 
-    libkey.init();
     libkey.getch();
     print("\ec");
 
@@ -313,12 +314,13 @@ var main=func(){
         }
     }
     libkey.close();
-
     print(
         map.gameover()?
         "\e[31mg\e[32ma\e[33mm\e[34me \e[35mo\e[36mv\e[94me\e[31mr \e[32m~\e[0m\n":
         "\e[31ms\e[32me\e[33me \e[34my\e[35mo\e[36mu \e[94m~\e[0m\n"
     );
+    print("enter anything to quit...\n");
+    input();
 };
 
-main();
+main();
\ No newline at end of file