diff --git a/hw/fw_cfg.c b/hw/fw_cfg.c
index e4dc7c3..b7da5c7 100644
--- a/hw/fw_cfg.c
+++ b/hw/fw_cfg.c
@@ -54,7 +54,8 @@
 #define JPG_FILE 0
 #define BMP_FILE 1
 
-static char *read_splashfile(char *filename, int *file_sizep, int *file_typep)
+static char *read_splashfile(char *filename, size_t *file_sizep,
+                             int *file_typep)
 {
     GError *err = NULL;
     gboolean res;
@@ -63,7 +64,7 @@
     unsigned int filehead = 0;
     int bmp_bpp;
 
-    res = g_file_get_contents(filename, &content, (gsize *)file_sizep, &err);
+    res = g_file_get_contents(filename, &content, file_sizep, &err);
     if (res == FALSE) {
         error_report("failed to read splash file '%s'", filename);
         g_error_free(err);
@@ -111,7 +112,7 @@
     const char *boot_splash_filename = NULL;
     char *p;
     char *filename, *file_data;
-    int file_size;
+    size_t file_size;
     int file_type = -1;
     const char *temp;
 
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 337ce7d..1d9599e 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -122,7 +122,7 @@
 extern int old_param;
 extern int boot_menu;
 extern uint8_t *boot_splash_filedata;
-extern int boot_splash_filedata_size;
+extern size_t boot_splash_filedata_size;
 extern uint8_t qemu_extra_params_fw[2];
 extern QEMUClock *rtc_clock;
 
diff --git a/vl.c b/vl.c
index 4ee1302..7aab73b 100644
--- a/vl.c
+++ b/vl.c
@@ -231,7 +231,7 @@
 const char *prom_envs[MAX_PROM_ENVS];
 int boot_menu;
 uint8_t *boot_splash_filedata;
-int boot_splash_filedata_size;
+size_t boot_splash_filedata_size;
 uint8_t qemu_extra_params_fw[2];
 
 typedef struct FWBootEntry FWBootEntry;