diff --git a/src/mindlessgen/qm/tm.py b/src/mindlessgen/qm/tm.py
index 3ab919d..1579602 100644
--- a/src/mindlessgen/qm/tm.py
+++ b/src/mindlessgen/qm/tm.py
@@ -157,7 +157,10 @@ def _run(self, temp_path: Path, arguments: list[str]) -> tuple[str, str, int]:
             tm_log_out = tm_out.stdout.decode("utf8", errors="replace")
             tm_log_err = tm_out.stderr.decode("utf8", errors="replace")
 
-            if "ridft : all done" not in tm_log_out:
+            if (
+                "ridft : all done" not in tm_log_out
+                or "ridft did not converge!" in tm_log_out
+            ):
                 raise sp.CalledProcessError(
                     1,
                     str(self.ridft_path),