diff --git a/src/lib-sieve/plugins/include/ext-include-common.c b/src/lib-sieve/plugins/include/ext-include-common.c
index 7a530450fef81b53879b65090c6d96832c79e121..d6dcbd7ef4165fbbcb6cfdff00c6027128f90754 100644
--- a/src/lib-sieve/plugins/include/ext-include-common.c
+++ b/src/lib-sieve/plugins/include/ext-include-common.c
@@ -4,6 +4,7 @@
 #include "lib.h"
 #include "array.h"
 #include "str-sanitize.h"
+#include "home-expand.h"
 
 #include "sieve-common.h"
 #include "sieve-error.h"