diff --git a/tsfel/feature_extraction/features.json b/tsfel/feature_extraction/features.json
index 517c843..858dfed 100644
--- a/tsfel/feature_extraction/features.json
+++ b/tsfel/feature_extraction/features.json
@@ -361,7 +361,7 @@
       "function": "tsfel.hist",
       "parameters": {
         "nbins": 10,
-        "r": null
+        "r": 1
       },
       "n_features": "nbins",
       "use": "yes"
diff --git a/tsfel/feature_extraction/features.py b/tsfel/feature_extraction/features.py
index 40e45e0..866635f 100644
--- a/tsfel/feature_extraction/features.py
+++ b/tsfel/feature_extraction/features.py
@@ -469,7 +469,7 @@ def entropy(signal, prob="standard"):
 
 
 @set_domain("domain", "statistical")
-def hist(signal, nbins=10, r=None):
+def hist(signal, nbins=10, r=1):
     """Computes histogram of the signal.
 
     Feature computational cost: 1
@@ -488,10 +488,8 @@ def hist(signal, nbins=10, r=None):
     nd-array
         The values of the histogram
     """
-    if r is not None:
-        r = [-r, r]
-
-    histsig, bin_edges = np.histogram(signal, bins=nbins, range=r)
+    # TODO: r value must be revised!
+    histsig, bin_edges = np.histogram(signal, bins=nbins, range=[-r, r])
 
     names = [str(np.around(bin_edges[i], 2)) + ':' + str(np.around(bin_edges[i + 1], 2)) for i in range(len(bin_edges) - 1)]