diff --git a/build.sh b/build.sh
index aae06c0b6f627fb444a3403e66a4d2415b958989..efe77065699f36d160872c777c167506f92c632e 100755
--- a/build.sh
+++ b/build.sh
@@ -382,6 +382,7 @@ build_generic_win32()
 	cp $ROOT/3rdparty/boinc/lib/app_ipc.h $ROOT/install/include/BOINC >> $LOGFILE 2>&1 || failure
 	cp $ROOT/3rdparty/boinc/lib/boinc_win.h $ROOT/install/include/BOINC >> $LOGFILE 2>&1 || failure
 	cp $ROOT/3rdparty/boinc/lib/common_defs.h $ROOT/install/include/BOINC >> $LOGFILE 2>&1 || failure
+	cp $ROOT/3rdparty/boinc/lib/diagnostics.h $ROOT/install/include/BOINC >> $LOGFILE 2>&1 || failure
 	cp $ROOT/3rdparty/boinc/lib/hostinfo.h $ROOT/install/include/BOINC >> $LOGFILE 2>&1 || failure
 	cp $ROOT/3rdparty/boinc/lib/proxy_info.h $ROOT/install/include/BOINC >> $LOGFILE 2>&1 || failure
 	cp $ROOT/3rdparty/boinc/lib/prefs.h $ROOT/install/include/BOINC >> $LOGFILE 2>&1 || failure