diff --git a/musical/denovo.py b/musical/denovo.py
index cbd1f7a..c8ed965 100644
--- a/musical/denovo.py
+++ b/musical/denovo.py
@@ -539,6 +539,8 @@ def __init__(self,
                 ):
         if (type(X) != np.ndarray) or (not np.issubdtype(X.dtype, np.floating)):
             self.X = np.array(X).astype(float)
+        else:
+            self.X = X
         self.n_features, self.n_samples = self.X.shape
         if isinstance(X, pd.DataFrame):
             self.X_df = X.astype(float)