diff --git a/third-party/miniupnp/Makefile.am b/third-party/miniupnp/Makefile.am
index e71b5bc85..e79a0d52d 100644
--- a/third-party/miniupnp/Makefile.am
+++ b/third-party/miniupnp/Makefile.am
@@ -28,6 +28,7 @@ noinst_HEADERS = \
 EXTRA_DIST = \
     README \
     LICENCE \
+    miniupnpcstrings.h.in \
     updateminiupnpcstrings.sh
 
 BUILT_SOURCES = \