diff --git a/amiga/menu.c b/amiga/menu.c
index 9cb857e9d..13b9c9c24 100644
--- a/amiga/menu.c
+++ b/amiga/menu.c
@@ -484,7 +484,7 @@ struct NewMenu *ami_create_menu(struct gui_window_2 *gwin)
 	if(nsoption_int(menu_refresh) > 0)
 	{
 		ami_schedule(nsoption_int(menu_refresh) * 10,
-			     ami_menu_refresh,
+			     (void *)ami_menu_refresh,
 			     gwin);
 	}
 
diff --git a/amiga/schedule.c b/amiga/schedule.c
index 4ec9df7e9..9aa74881f 100755
--- a/amiga/schedule.c
+++ b/amiga/schedule.c
@@ -17,7 +17,6 @@
  */
 
 #include "amiga/os3support.h"
-#include "amiga/schedule.h"
 
 #include <proto/exec.h>
 #include <proto/timer.h>
@@ -26,6 +25,10 @@
 #include <stdbool.h>
 #include <pbl.h>
 
+#include "utils/errors.h"
+
+#include "amiga/schedule.h"
+
 struct nscallback
 {
 	struct TimeVal tv;
diff --git a/amiga/tree.c b/amiga/tree.c
index fa1252831..df6ac9bb3 100644
--- a/amiga/tree.c
+++ b/amiga/tree.c
@@ -1396,5 +1396,5 @@ void ami_tree_redraw_request(int x, int y, int width, int height, void *data)
 	if(nsoption_bool(direct_render) == false)
 		ami_schedule(0, ami_tree_redraw_req, atrr_data);
 	else
-		am_schedule(0, ami_tree_redraw_req_dr, atrr_data);
+		ami_schedule(0, ami_tree_redraw_req_dr, atrr_data);
 }
diff --git a/atari/schedule.c b/atari/schedule.c
index 02a376245..3bef573a5 100755
--- a/atari/schedule.c
+++ b/atari/schedule.c
@@ -22,6 +22,8 @@
 #include <sys/time.h>
 #include <time.h>
 
+#include "utils/errors.h"
+
 #include "atari/schedule.h"
 
 #ifdef DEBUG_SCHEDULER
diff --git a/cocoa/schedule.m b/cocoa/schedule.m
index 2dd9a81f6..f0896bd9d 100644
--- a/cocoa/schedule.m
+++ b/cocoa/schedule.m
@@ -18,6 +18,8 @@
 
 #import <Cocoa/Cocoa.h>
 
+#import "utils/errors.h"
+
 #import "cocoa/schedule.h"
 
 @interface ScheduledCallback : NSObject {
diff --git a/windows/schedule.c b/windows/schedule.c
index f819918ba..4aac981ef 100644
--- a/windows/schedule.c
+++ b/windows/schedule.c
@@ -19,10 +19,11 @@
 #include <sys/time.h>
 #include <time.h>
 
-#include "windows/schedule.h"
-
 #include "utils/log.h"
 #include "utils/utils.h"
+#include "utils/errors.h"
+
+#include "windows/schedule.h"
 
 #ifdef DEBUG_SCHEDULER
 #define SRLOG(x) LOG(x)
@@ -110,7 +111,7 @@ nserror win32_schedule(int ival, void (*callback)(void *p), void *p)
 	}
 
         tv.tv_sec = ival / 1000; /* miliseconds to seconds */
-        tv.tv_usec = (cs_ival % 1000) * 1000; /* remainder to microseconds */
+        tv.tv_usec = (ival % 1000) * 1000; /* remainder to microseconds */
 
 	nscb = calloc(1, sizeof(struct nscallback));
 	if (nscb == NULL) {