diff --git a/misc.h b/misc.h
index d5999cbe..ce927ec5 100644
--- a/misc.h
+++ b/misc.h
@@ -59,10 +59,14 @@ void base64_encode_atom(const unsigned char *data, int n, char *out);
 int base64_decode_atom(const char *atom, unsigned char *out);
 
 struct bufchain_granule;
-typedef struct bufchain_tag {
+struct bufchain_tag {
     struct bufchain_granule *head, *tail;
     int buffersize;		       /* current amount of buffered data */
-} bufchain;
+};
+#ifndef BUFCHAIN_TYPEDEF
+typedef struct bufchain_tag bufchain;  /* rest of declaration in misc.c */
+#define BUFCHAIN_TYPEDEF
+#endif
 
 void bufchain_init(bufchain *ch);
 void bufchain_clear(bufchain *ch);
diff --git a/network.h b/network.h
index 10be046f..d58635b6 100644
--- a/network.h
+++ b/network.h
@@ -229,7 +229,10 @@ Socket new_error_socket(const char *errmsg, Plug plug);
 void backend_socket_log(void *frontend, int type, SockAddr addr, int port,
                         const char *error_msg, int error_code, Conf *conf,
                         int session_started);
+#ifndef BUFCHAIN_TYPEDEF
 typedef struct bufchain_tag bufchain;  /* rest of declaration in misc.c */
+#define BUFCHAIN_TYPEDEF
+#endif
 void log_proxy_stderr(Plug plug, bufchain *buf, const void *vdata, int len);
 
 #endif