diff --git a/lcthw-remnants-2/ex17-ec.c b/lcthw-remnants-2/ex17-ec.c
index 24a2eca..33bc92f 100644
--- a/lcthw-remnants-2/ex17-ec.c
+++ b/lcthw-remnants-2/ex17-ec.c
@@ -3,6 +3,7 @@
 #include <stdlib.h>
 #include <errno.h>
 #include <string.h>
+#include <libgen.h>
 
 #define MAX_DATA 512
 #define MAX_ROWS 100
@@ -153,7 +154,10 @@ void Database_list(struct Connection *conn)
 
 int main(int argc, char *argv[])
 {
-  if(argc < 3) die("USAGE: ex17 <dbfile> <action> [action params]", NULL);
+  char usage[64];
+  sprintf(usage, "USAGE: %s <dbfile> <action> [action params]", basename(argv[0]));
+
+  if(argc < 3) die(usage, NULL);
 
   char *filename = argv[1];
   char action = argv[2][0];