diff --git a/nifty5/minimization/metric_gaussian_kl.py b/nifty5/minimization/metric_gaussian_kl.py
index 2e65d8cb0ff05fd4c7d3eff544710f8d74e15468..ab90ecc39aab61c4222ac3f85368bc2b3abfeb54 100644
--- a/nifty5/minimization/metric_gaussian_kl.py
+++ b/nifty5/minimization/metric_gaussian_kl.py
@@ -57,7 +57,7 @@ class MetricGaussianKL(Energy):
     Notes
     -----
     For further details see: Metric Gaussian Variational Inference
-    (in preparation)
+    (FIXME in preparation)
     """
 
     def __init__(self, mean, hamiltonian, n_samples, constants=[],