diff --git a/src/dalist_debug.c b/src/dalist_debug.c
index f466989..3c4018f 100644
--- a/src/dalist_debug.c
+++ b/src/dalist_debug.c
@@ -119,7 +119,7 @@ static int dalist_dbg_write_nt(
 	size_t			nbyte)
 {
 	void *			hfile;
-	dalist_iosb		iosb;
+	struct dalist_iosb	iosb;
 	dalist_write_file *	pfn_write_file;
 
 	hfile          = (void *)fildes_or_hfile;
diff --git a/src/dalist_impl.h b/src/dalist_impl.h
index 97cef11..d80c65e 100644
--- a/src/dalist_impl.h
+++ b/src/dalist_impl.h
@@ -27,13 +27,13 @@ typedef dalist_memfn_nt_allocvm	memfn_allocvm;
 #define dalist_errno(x) errno
 #endif
 
-typedef struct _dalist_io_status_block {
+struct dalist_iosb {
 	union {
 		int32_t		status;
 		void *		pointer;
 	};
 	intptr_t		info;
-} dalist_io_status_block, dalist_iosb;
+};
 
 
 typedef int dalist_dbg_write(