diff --git a/concrete/numpy/compilation/compiler.py b/concrete/numpy/compilation/compiler.py
index 6189d473e..f48254b4f 100644
--- a/concrete/numpy/compilation/compiler.py
+++ b/concrete/numpy/compilation/compiler.py
@@ -71,9 +71,24 @@ class Compiler:
                 f"{'are' if len(missing_args) > 1 else 'is'} not provided"
             )
 
-        additional_args = parameter_encryption_statuses.keys() - signature.parameters.keys()
-        for arg in additional_args:
-            del parameter_encryption_statuses[arg]
+        additional_args = list(parameter_encryption_statuses)
+        for arg in signature.parameters.keys():
+            if arg in parameter_encryption_statuses:
+                additional_args.remove(arg)
+
+        if len(additional_args) != 0:
+            parameter_str = repr(additional_args[0])
+            for arg in additional_args[1:-1]:
+                parameter_str += f", {repr(arg)}"
+            if len(additional_args) != 1:
+                parameter_str += f" and {repr(additional_args[-1])}"
+
+            raise ValueError(
+                f"Encryption status{'es' if len(additional_args) > 1 else ''} "
+                f"of {parameter_str} {'are' if len(additional_args) > 1 else 'is'} provided but "
+                f"{'they are' if len(additional_args) > 1 else 'it is'} not a parameter "
+                f"of function '{function.__name__}'"
+            )
 
         self.function = function  # type: ignore
         self.parameter_encryption_statuses = {
@@ -155,6 +170,25 @@ class Compiler:
         """
 
         if inputset is not None:
+            for index, sample in enumerate(iter(inputset)):
+                if not isinstance(sample, tuple):
+                    sample = (sample,)
+
+                if len(sample) != len(self.parameter_encryption_statuses):
+                    expected = (
+                        "a single value"
+                        if len(self.parameter_encryption_statuses) == 1
+                        else f"a tuple of {len(self.parameter_encryption_statuses)} values"
+                    )
+                    actual = (
+                        "a single value" if len(sample) == 1 else f"a tuple of {len(sample)} values"
+                    )
+
+                    raise ValueError(
+                        f"Input #{index} of your inputset is not well formed "
+                        f"(expected {expected} got {actual})"
+                    )
+
             for input_ in inputset:
                 self.inputset.append(input_)
 
diff --git a/tests/compilation/test_compiler.py b/tests/compilation/test_compiler.py
index 486f99e38..c0fad81d4 100644
--- a/tests/compilation/test_compiler.py
+++ b/tests/compilation/test_compiler.py
@@ -45,12 +45,63 @@ def test_compiler_bad_init():
         "Encryption status of parameter 'x' of function 'f' is not provided"
     )
 
-    # additional p
+    # additional a, b, c
+    # ------------------
+    with pytest.raises(ValueError) as excinfo:
+        Compiler(
+            f,
+            {
+                "x": "encrypted",
+                "y": "encrypted",
+                "z": "encrypted",
+                "a": "encrypted",
+                "b": "encrypted",
+                "c": "encrypted",
+            },
+        )
+
+    assert str(excinfo.value) == (
+        "Encryption statuses of 'a', 'b' and 'c' are provided "
+        "but they are not a parameter of function 'f'"
+    )
+
+    # additional a and b
+    # ------------------
+
+    with pytest.raises(ValueError) as excinfo:
+        Compiler(
+            f,
+            {
+                "x": "encrypted",
+                "y": "encrypted",
+                "z": "encrypted",
+                "a": "encrypted",
+                "b": "encrypted",
+            },
+        )
+
+    assert str(excinfo.value) == (
+        "Encryption statuses of 'a' and 'b' are provided "
+        "but they are not a parameter of function 'f'"
+    )
+
+    # additional a
     # ------------
 
-    # this is fine and `p` is just ignored
+    with pytest.raises(ValueError) as excinfo:
+        Compiler(
+            f,
+            {
+                "x": "encrypted",
+                "y": "encrypted",
+                "z": "encrypted",
+                "a": "encrypted",
+            },
+        )
 
-    Compiler(f, {"x": "encrypted", "y": "encrypted", "z": "clear", "p": "clear"})
+    assert str(excinfo.value) == (
+        "Encryption status of 'a' is provided but it is not a parameter of function 'f'"
+    )
 
 
 def test_compiler_bad_call():
@@ -98,6 +149,9 @@ def test_compiler_bad_compile(helpers):
     def f(x, y, z):
         return x + y + z
 
+    # without inputset
+    # ----------------
+
     with pytest.raises(RuntimeError) as excinfo:
         compiler = Compiler(
             f,
@@ -107,6 +161,41 @@ def test_compiler_bad_compile(helpers):
 
     assert str(excinfo.value) == "Compiling function 'f' without an inputset is not supported"
 
+    # with bad inputset at the first input
+    # ------------------------------------
+
+    with pytest.raises(ValueError) as excinfo:
+        compiler = Compiler(
+            f,
+            {"x": "encrypted", "y": "encrypted", "z": "clear"},
+        )
+        inputset = [1]
+        compiler.compile(inputset, configuration=configuration)
+
+    assert str(excinfo.value) == (
+        "Input #0 of your inputset is not well formed "
+        "(expected a tuple of 3 values got a single value)"
+    )
+
+    # with bad inputset at the second input
+    # -------------------------------------
+
+    with pytest.raises(ValueError) as excinfo:
+        compiler = Compiler(
+            f,
+            {"x": "encrypted", "y": "encrypted", "z": "clear"},
+        )
+        inputset = [(1, 2, 3), (1, 2)]
+        compiler.compile(inputset, configuration=configuration)
+
+    assert str(excinfo.value) == (
+        "Input #1 of your inputset is not well formed "
+        "(expected a tuple of 3 values got a tuple of 2 values)"
+    )
+
+    # with bad configuration
+    # ----------------------
+
     with pytest.raises(RuntimeError) as excinfo:
         compiler = Compiler(lambda x: x, {"x": "encrypted"})
         compiler.compile(