diff --git a/panda/src/downloader/Sources.pp b/panda/src/downloader/Sources.pp
index e95336455a..2930bb52c1 100644
--- a/panda/src/downloader/Sources.pp
+++ b/panda/src/downloader/Sources.pp
@@ -25,7 +25,7 @@
     multiplexStreamBuf.I multiplexStreamBuf.h \
     socketStream.h socketStream.I \
     urlSpec.I urlSpec.h \
-    $[if $[HAVE_NET], downloadDb.I downloadDb.h] \
+    $[if $[HAVE_NET], downloadDb.I downloadDb.h downloader.I downloader.h] \
     $[if $[HAVE_ZLIB], decompressor.h download_utils.h] \
     $[if $[HAVE_CRYPTO], patcher.cxx patcher.h patcher.I]
     
@@ -43,7 +43,7 @@
     multiplexStream.cxx multiplexStreamBuf.cxx \
     socketStream.cxx \
     urlSpec.cxx \
-    $[if $[HAVE_NET], downloadDb.cxx] \
+    $[if $[HAVE_NET], downloadDb.cxx downloader.cxx] \
     $[if $[HAVE_ZLIB], decompressor.cxx download_utils.cxx]
 
   #define INSTALL_HEADERS \
@@ -55,6 +55,7 @@
     config_downloader.h \
     decompressor.h \
     download_utils.h downloadDb.h downloadDb.I \
+    downloader.h downloader.I \
     extractor.h \
     httpClient.I httpClient.h \
     httpChannel.I httpChannel.h \