diff --git a/litex/build/sim/core/modules.c b/litex/build/sim/core/modules.c
index 2d12a771f..60bec4c69 100644
--- a/litex/build/sim/core/modules.c
+++ b/litex/build/sim/core/modules.c
@@ -20,7 +20,7 @@ int litex_sim_register_ext_module(struct ext_module_s *mod)
 {
   int ret=RC_OK;
   struct ext_module_list_s *ml=NULL;
-  
+
   if(!mod)
   {
     eprintf("Invalid arguments\n");
@@ -81,7 +81,7 @@ int litex_sim_load_ext_modules(struct ext_module_list_s **mlist)
 	eprintf("Can't load library %s\n", libdylib_last_error());
 	goto out;
       }
-      
+
       if(!libdylib_find(lib, "litex_sim_ext_module_init"))
       {
 	ret = RC_ERROR;
diff --git a/litex/build/sim/core/modules/clocker/clocker.c b/litex/build/sim/core/modules/clocker/clocker.c
index 13d047892..1b2b9db04 100644
--- a/litex/build/sim/core/modules/clocker/clocker.c
+++ b/litex/build/sim/core/modules/clocker/clocker.c
@@ -60,7 +60,7 @@ static int clocker_new(void **sess, char *args)
 
 out:
   *sess=(void*)s;
-  return ret;  
+  return ret;
 }
 
 static int clocker_add_pads(void *sess, struct pad_list_s *plist)
@@ -74,7 +74,7 @@ static int clocker_add_pads(void *sess, struct pad_list_s *plist)
     goto out;
   }
   pads = plist->pads;
-  
+
   if(!strcmp(plist->name, "sys_clk")) {
     litex_sim_module_pads_get(pads, "sys_clk", (void**)&s->sys_clk);
   }
diff --git a/litex/build/sim/core/modules/serial2tcp/serial2tcp.c b/litex/build/sim/core/modules/serial2tcp/serial2tcp.c
index 347c92eb8..82fe4fbab 100644
--- a/litex/build/sim/core/modules/serial2tcp/serial2tcp.c
+++ b/litex/build/sim/core/modules/serial2tcp/serial2tcp.c
@@ -97,9 +97,9 @@ void read_handler(int fd, short event, void *arg)
   struct session_s *s = (struct session_s*)arg;
   char buffer[1024];
   ssize_t read_len;
-  
+
   int i;
-  
+
   read_len = read(fd, buffer, 1024);
   for(i = 0; i < read_len; i++)
   {
@@ -118,10 +118,10 @@ static void accept_conn_cb(struct evconnlistener *listener, evutil_socket_t fd,
 {
   struct session_s *s = (struct session_s*)ctx;
   struct timeval tv = {1, 0};
-  
+
   s->fd = fd;
   s->ev = event_new(base, fd, EV_READ | EV_PERSIST , event_handler, s);
-  event_add(s->ev, &tv);  
+  event_add(s->ev, &tv);
 }
 
 static void
@@ -159,7 +159,7 @@ static int serial2tcp_new(void **sess, char *args)
     fprintf(stderr, "Invalid port selected!\n");
     goto out;
   }
-   
+
   s=(struct session_s*)malloc(sizeof(struct session_s));
   if(!s) {
     ret = RC_NOENMEM;
@@ -177,8 +177,8 @@ static int serial2tcp_new(void **sess, char *args)
     eprintf("Can't bind port %d\n!\n", port);
     goto out;
   }
-  evconnlistener_set_error_cb(listener, accept_error_cb); 
-  
+  evconnlistener_set_error_cb(listener, accept_error_cb);
+
 out:
   *sess=(void*)s;
   return ret;
@@ -202,19 +202,19 @@ static int serial2tcp_add_pads(void *sess, struct pad_list_s *plist)
     litex_sim_module_pads_get(pads, "source_valid", (void**)&s->tx_valid);
     litex_sim_module_pads_get(pads, "source_ready", (void**)&s->tx_ready);
   }
-  
+
   if(!strcmp(plist->name, "sys_clk"))
     litex_sim_module_pads_get(pads, "sys_clk", (void**)&s->sys_clk);
 
 out:
   return ret;
-  
+
 }
 static int serial2tcp_tick(void *sess)
 {
   char c;
   int ret = RC_OK;
-  
+
   struct session_s *s = (struct session_s*)sess;
   if(*s->sys_clk == 0)
     return RC_OK;
@@ -228,7 +228,7 @@ static int serial2tcp_tick(void *sess)
       goto out;
     }
   }
-  
+
   *s->rx_valid=0;
   if(s->datalen) {
     *s->rx=s->databuf[s->data_start];
@@ -236,7 +236,7 @@ static int serial2tcp_tick(void *sess)
     s->datalen--;
     *s->rx_valid=1;
   }
-  
+
 out:
   return ret;
 }
diff --git a/litex/build/sim/core/pads.c b/litex/build/sim/core/pads.c
index 225a34c3b..c40c3b119 100644
--- a/litex/build/sim/core/pads.c
+++ b/litex/build/sim/core/pads.c
@@ -17,7 +17,7 @@ int litex_sim_register_pads(struct pad_s *pads, char *interface_name, int index)
   {
     ret = RC_INVARG;
     eprintf("Invalid argument\n");
-    goto out;    
+    goto out;
   }
 
   pl = (struct pad_list_s *)malloc(sizeof(struct pad_list_s));
@@ -36,7 +36,7 @@ int litex_sim_register_pads(struct pad_s *pads, char *interface_name, int index)
 
   pl->next = padlist;
   padlist = pl;
-  
+
 out:
   return ret;
 }
@@ -45,7 +45,7 @@ int litex_sim_pads_get_list(struct pad_list_s **plist)
 {
   int ret=RC_OK;
 
-  
+
   if(!plist)
   {
     ret = RC_INVARG;
diff --git a/litex/build/sim/core/parse.c b/litex/build/sim/core/parse.c
index 29d483d0d..6af8a198b 100644
--- a/litex/build/sim/core/parse.c
+++ b/litex/build/sim/core/parse.c
@@ -99,7 +99,7 @@ static int json_to_interface_list(json_object *interface, struct interface_s **i
   json_object *obj;
   json_object *name;
   json_object *index;
-  
+
   struct interface_s *t_iface=NULL;
 
   if(!interface || !iface)
@@ -108,7 +108,7 @@ static int json_to_interface_list(json_object *interface, struct interface_s **i
     eprintf("Invalid argument\n");
     goto out;
   }
-  
+
   if(!json_object_is_type(interface, json_type_array))
   {
     ret=RC_JSERROR;
@@ -166,7 +166,7 @@ out:
 
 static int module_list_free(struct module_s *mod)
 {
-  int ret=RC_OK; 
+  int ret=RC_OK;
   struct module_s *mnext;
   int i;
   while(mod)
@@ -247,7 +247,7 @@ static int json_to_module_list(json_object *obj, struct module_s **mod)
 
     tickfirst=NULL;
     json_object_object_get_ex(tobj, "tickfirst", &tickfirst);
-        
+
 
     if(m)
     {
@@ -275,7 +275,7 @@ static int json_to_module_list(json_object *obj, struct module_s **mod)
       goto out;
     }
     len = 0;
-    
+
     while(m->iface[len++].name);
     m->niface= len-1;
     m->name = strdup(json_object_get_string(name));