diff --git a/archive.h b/archive.h
index ff401e9..602717e 100644
--- a/archive.h
+++ b/archive.h
@@ -106,6 +106,9 @@ typedef ssize_t la_ssize_t;
  * .lib.  The default here assumes you're building a DLL.  Only
  * libarchive source should ever define __LIBARCHIVE_BUILD.
  */
+
+#define LIBARCHIVE_STATIC
+
 #if ((defined __WIN32__) || (defined _WIN32) || defined(__CYGWIN__)) && (!defined LIBARCHIVE_STATIC)
 # ifdef __LIBARCHIVE_BUILD
 #  ifdef __GNUC__
diff --git a/archive_entry.h b/archive_entry.h
index 71b1e87..44246b9 100644
--- a/archive_entry.h
+++ b/archive_entry.h
@@ -85,6 +85,9 @@ typedef int64_t la_int64_t;
  * .lib.  The default here assumes you're building a DLL.  Only
  * libarchive source should ever define __LIBARCHIVE_BUILD.
  */
+
+#define LIBARCHIVE_STATIC
+
 #if ((defined __WIN32__) || (defined _WIN32) || defined(__CYGWIN__)) && (!defined LIBARCHIVE_STATIC)
 # ifdef __LIBARCHIVE_BUILD
 #  ifdef __GNUC__