diff --git a/panda/src/downloader/asyncDownloader.h b/panda/src/downloader/asyncDownloader.h
index 4a3e2f2408..e3f7450ca3 100644
--- a/panda/src/downloader/asyncDownloader.h
+++ b/panda/src/downloader/asyncDownloader.h
@@ -19,6 +19,7 @@
 #if defined(WIN32_VC)
   #include <winsock2.h>
 #else
+  #include <netinet/in.h>  // Irix seems to require this one for resolv.h.
   #include <sys/types.h>
   #include <sys/socket.h>
   #include <resolv.h>
diff --git a/panda/src/downloader/downloader.h b/panda/src/downloader/downloader.h
index 8a0c15b6df..78d4452479 100644
--- a/panda/src/downloader/downloader.h
+++ b/panda/src/downloader/downloader.h
@@ -19,6 +19,7 @@
 #if defined(WIN32_VC)
   #include <winsock2.h>
 #else
+  #include <netinet/in.h>  // Irix seems to require this one for resolv.h.
   #include <sys/types.h>
   #include <sys/socket.h>
   #include <resolv.h>