diff --git a/ex17.c b/ex17.c
index 8e3cbb1..493d9a1 100644
--- a/ex17.c
+++ b/ex17.c
@@ -104,7 +104,7 @@ void Database_create(struct Connection *conn)
 void Database_set(struct Connection *conn, int id, const char *name, const char *email)
 {
     struct Address *addr = &conn->db->rows[id];
-    if(addr->set) die("Already set, delete it first.");
+    if(addr->set) die("Already set, delete it first");
 
     addr->set = 1;
     // WARNING: bug, read the "How To Break It" and fix this
@@ -196,3 +196,4 @@ int main(int argc, char *argv[])
 
     return 0;
 }
+