1 files changed, 1 insertions, 0 deletions
diff --git a/src/chkshsgr.c b/src/chkshsgr.c
index 38c352d..a33403b 100644
--- a/src/chkshsgr.c
+++ b/src/chkshsgr.c
@@ -1,6 +1,7 @@
 /* Public domain. */
 
 #include <unistd.h>
+#include <grp.h>
 
 int main()
 {