diff --git a/tools/Makefile.am b/tools/Makefile.am
index cf248f3..5b07a5e 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -69,3 +69,5 @@
 idevicediagnostics_CFLAGS = $(AM_CFLAGS)
 idevicediagnostics_LDFLAGS = $(AM_LDFLAGS)
 idevicediagnostics_LDADD = ../src/libimobiledevice.la
+
+EXTRA_DIST = socket.h thread.h