diff --git a/common/setgroups.c b/common/setgroups.c
index c469d20b3..2c42816f1 100644
--- a/common/setgroups.c
+++ b/common/setgroups.c
@@ -32,6 +32,7 @@
 # include <unistd.h>
 #endif /* HAVE_UNISTD_H */
 #include <errno.h>
+#include <grp.h>
 #include <limits.h>
 
 #include "missing.h"