diff --git a/freqtrade/freqai/data_drawer.py b/freqtrade/freqai/data_drawer.py
index 4d41faa83..c48e19688 100644
--- a/freqtrade/freqai/data_drawer.py
+++ b/freqtrade/freqai/data_drawer.py
@@ -280,7 +280,7 @@ class FreqaiDataDrawer:
         # set new_pred values to nans (we want to signal to user that there was nothing
         # historically made during downtime. The newest pred will get appeneded later in
         # append_model_predictions)
-        new_pred.iloc[:, :] = np.nan.astype(new_pred.dtypes)
+        new_pred.iloc[:, :] = new_pred.astype(float).values * np.nan
         new_pred["date_pred"] = dataframe["date"]
         hist_preds = self.historic_predictions[pair].copy()