diff --git a/src/include/lwip/apps/http_client.h b/src/include/lwip/apps/http_client.h
index 3071d185..5310457c 100644
--- a/src/include/lwip/apps/http_client.h
+++ b/src/include/lwip/apps/http_client.h
@@ -43,6 +43,7 @@
 #include "lwip/err.h"
 #include "lwip/altcp.h"
 #include "lwip/prot/iana.h"
+#include "lwip/pbuf.h"
 
 #ifdef __cplusplus
 extern "C" {