diff --git a/src/testsuite/Makefile.am b/src/testsuite/Makefile.am
index 73d75e818c9416ca9467498e4837e140c22615fc..3d60b1216e925fb980ad90b00ba6c2cde3a8da73 100644
--- a/src/testsuite/Makefile.am
+++ b/src/testsuite/Makefile.am
@@ -66,5 +66,6 @@ noinst_HEADERS = \
 	testsuite-log.h \
 	testsuite-script.h \
 	testsuite-result.h \
-	testsuite-smtp.h
+	testsuite-smtp.h \
+	testsuite-mailstore.h