diff --git a/qtpylib/indicators.py b/qtpylib/indicators.py
index 32d6315..47752fc 100644
--- a/qtpylib/indicators.py
+++ b/qtpylib/indicators.py
@@ -222,7 +222,7 @@ def crossed(series1, series2, direction=None):
     if isinstance(series1, np.ndarray):
         series1 = pd.Series(series1)
 
-    if isinstance(series2, (float, int, np.ndarray)):
+    if isinstance(series2, (float, int, np.ndarray, np.integer, np.floating)):
         series2 = pd.Series(index=series1.index, data=series2)
 
     if direction is None or direction == "above":