diff --git a/ggated/ggated.c b/ggated/ggated.c
index 82d66e1..b211ccc 100644
--- a/ggated/ggated.c
+++ b/ggated/ggated.c
@@ -60,7 +60,7 @@
 
 struct ggd_connection {
 	off_t		 c_mediasize;
-	off_t		 c_sectorsize;
+	unsigned	 c_sectorsize;
 	unsigned	 c_flags;	/* flags (RO/RW) */
 	int		 c_diskfd;
 	int		 c_sendfd;
diff --git a/shared/ggate.c b/shared/ggate.c
index 5101092..09e35d3 100644
--- a/shared/ggate.c
+++ b/shared/ggate.c
@@ -149,10 +149,10 @@ g_gate_mediasize(int fd)
 	return (mediasize);
 }
 
-size_t
+unsigned
 g_gate_sectorsize(int fd)
 {
-	size_t secsize;
+	unsigned secsize;
 	struct stat sb;
 
 	if (fstat(fd, &sb) == -1)
diff --git a/shared/ggate.h b/shared/ggate.h
index acbdaaa..3e26253 100644
--- a/shared/ggate.h
+++ b/shared/ggate.h
@@ -98,7 +98,7 @@ void	g_gate_log(int priority, const char *message, ...);
 void	g_gate_xvlog(const char *message, va_list ap);
 void	g_gate_xlog(const char *message, ...);
 off_t	g_gate_mediasize(int fd);
-size_t	g_gate_sectorsize(int fd);
+unsigned g_gate_sectorsize(int fd);
 void	g_gate_open_device(void);
 void	g_gate_close_device(void);
 void	g_gate_ioctl(unsigned long req, void *data);