diff --git a/lib/util.c b/lib/util.c
index 984ab4570..0ebf0852f 100644
--- a/lib/util.c
+++ b/lib/util.c
@@ -373,11 +373,18 @@ void
 set_program_name__(const char *argv0, const char *version, const char *date,
                    const char *time)
 {
-    const char *slash = strrchr(argv0, '/');
-
+#ifdef _WIN32
+    char *basename;
+    size_t max_len = strlen(argv0) + 1;
+    basename = xmalloc(max_len);
+    _splitpath_s(argv0, NULL, 0, NULL, 0, basename, max_len, NULL, 0);
+    assert_single_threaded();
+    program_name = basename;
+#else
+    const char *slash = strrchr(argv0, '/');
     assert_single_threaded();
-
     program_name = slash ? slash + 1 : argv0;
+#endif
 
     free(program_version);