diff --git a/repmgr-client.c b/repmgr-client.c
index fb554a73..6115a61e 100644
--- a/repmgr-client.c
+++ b/repmgr-client.c
@@ -51,6 +51,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <pwd.h>
 #include <unistd.h>
 #include <sys/stat.h>
 #include <signal.h>