diff --git a/dmd/root.c b/dmd/root.c
index 63453f0b..f473a254 100644
--- a/dmd/root.c
+++ b/dmd/root.c
@@ -1394,7 +1394,7 @@ void OutBuffer::reserve(unsigned nbytes)
 #if defined (__x86_64__)
 	size = (offset + nbytes) * 2 + 2;
 #else
-	size = (offset + nbytes) * 2 + 2;
+	size = (offset + nbytes) * 2;
 #endif
 	data = (unsigned char *)mem.realloc(data, size);
     }