diff --git a/include/Makefile.am b/include/Makefile.am
index 2e58d7e..04a8b23 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -67,6 +67,7 @@
                        osmocom/gsm/gsm0502.h \
                        osmocom/gsm/gsm0503.h \
                        osmocom/gsm/gsm0808.h \
+                       osmocom/gsm/gsm23003.h \
                        osmocom/gsm/gsm48.h \
                        osmocom/gsm/gsm48_ie.h \
                        osmocom/gsm/gsm_utils.h \