diff --git a/progs/wgl/wglthreads/wglthreads.c b/progs/wgl/wglthreads/wglthreads.c
index 4e53fa8dee5..1a8219ccc94 100644
--- a/progs/wgl/wglthreads/wglthreads.c
+++ b/progs/wgl/wglthreads/wglthreads.c
@@ -541,6 +541,7 @@ main(int argc, char *argv[])
    for (i = 1; i < argc; i++) {
       if (strcmp(argv[i], "-h") == 0) {
          usage();
+         exit(0);
       }
       else if (strcmp(argv[i], "-l") == 0) {
          Locking = 1;