diff --git a/ecml_tools/__init__.py b/ecml_tools/__init__.py
index 32f3110..af526ba 100644
--- a/ecml_tools/__init__.py
+++ b/ecml_tools/__init__.py
@@ -5,4 +5,4 @@
 # granted to it by virtue of its status as an intergovernmental organisation
 # nor does it submit to any jurisdiction.
 
-__version__ = "0.4.7"
+__version__ = "0.5.0"
diff --git a/ecml_tools/data.py b/ecml_tools/data.py
index 15234c5..700e3cf 100644
--- a/ecml_tools/data.py
+++ b/ecml_tools/data.py
@@ -1043,6 +1043,9 @@ def frequency(self):
     def source(self, index):
         return Source(self, index, self.forward.source(index))
 
+    def __repr__(self):
+        return f"Subset({self.dates[0]}, {self.dates[-1]}, {self.frequency})"
+
 
 class Select(Forwards):
     """
@@ -1317,8 +1320,8 @@ def _auto_adjust(datasets, kwargs):
     """Adjust the datasets for concatenation or joining based
     on parameters set to 'matching'"""
 
-    if kwargs.get("ajust") == "matching":
-        kwargs.pop("ajust")
+    if kwargs.get("adjust") == "matching":
+        kwargs.pop("adjust")
         for p in ("select", "frequency", "start", "end"):
             kwargs[p] = "matching"
 
@@ -1327,27 +1330,29 @@ def _auto_adjust(datasets, kwargs):
     if kwargs.get("select") == "matching":
         kwargs.pop("select")
         variables = None
+
         for d in datasets:
             if variables is None:
                 variables = set(d.variables)
             else:
                 variables &= set(d.variables)
+
         if len(variables) == 0:
             raise ValueError("No common variables")
 
         adjust["select"] = sorted(variables)
 
-    if kwargs.get("frequency") == "matching":
-        kwargs.pop("frequency")
-        adjust["frequency"] = max(d.frequency for d in datasets)
-
     if kwargs.get("start") == "matching":
         kwargs.pop("start")
         adjust["start"] = max(d.dates[0] for d in datasets).astype(object)
 
     if kwargs.get("end") == "matching":
         kwargs.pop("end")
-        adjust["end"] = max(d.dates[-1] for d in datasets).astype(object)
+        adjust["end"] = min(d.dates[-1] for d in datasets).astype(object)
+
+    if kwargs.get("frequency") == "matching":
+        kwargs.pop("frequency")
+        adjust["frequency"] = max(d.frequency for d in datasets)
 
     if adjust:
         datasets = [d._subset(**adjust) for d in datasets]