diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
index e872e47..e956314 100644
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -2101,8 +2101,8 @@
 /*[clinic input]
 math.dist
 
-    p: object(subclass_of='&PyTuple_Type')
-    q: object(subclass_of='&PyTuple_Type')
+    p: object
+    q: object
     /
 
 Return the Euclidean distance between two points p and q.
@@ -2116,7 +2116,7 @@
 
 static PyObject *
 math_dist_impl(PyObject *module, PyObject *p, PyObject *q)
-/*[clinic end generated code: output=56bd9538d06bbcfe input=937122eaa5f19272]*/
+/*[clinic end generated code: output=56bd9538d06bbcfe input=8c83c07c7a524664]*/
 {
     PyObject *item;
     double max = 0.0;
@@ -2126,6 +2126,11 @@
     double diffs_on_stack[NUM_STACK_ELEMS];
     double *diffs = diffs_on_stack;
 
+    if (!PyTuple_Check(p) || !PyTuple_Check(q)) {
+        PyErr_SetString(PyExc_TypeError, "dist argument must be a tuple");
+        return NULL;
+    }
+
     m = PyTuple_GET_SIZE(p);
     n = PyTuple_GET_SIZE(q);
     if (m != n) {