diff --git a/minigrida/descriptors/sdaps.py b/minigrida/descriptors/sdaps.py
index 2723422..6520e08 100644
--- a/minigrida/descriptors/sdaps.py
+++ b/minigrida/descriptors/sdaps.py
@@ -51,7 +51,7 @@ def run(gt, rasters, coords, remove, attributes, adjacency='4', filtering='direc
         y += [y_raw[lbl]]
         groups += [np.repeat(coordsi, lbl.sum())]
 
-    X = np.concatenate(X)
+    X = np.concatenate(X).astype(np.float32)
     y = np.concatenate(y)
     groups = np.concatenate(groups)