diff --git a/Modules/_testcapimodule.c b/Modules/_testcapimodule.c
index 35d25e6..51c79c9 100644
--- a/Modules/_testcapimodule.c
+++ b/Modules/_testcapimodule.c
@@ -1003,6 +1003,15 @@
 }
 
 static PyObject *
+getargs_c(PyObject *self, PyObject *args)
+{
+    char c;
+    if (!PyArg_ParseTuple(args, "c", &c))
+        return NULL;
+    return PyBytes_FromStringAndSize(&c, 1);
+}
+
+static PyObject *
 getargs_s(PyObject *self, PyObject *args)
 {
     char *str;
@@ -2289,6 +2298,7 @@
         (PyCFunction)test_long_long_and_overflow, METH_NOARGS},
     {"test_L_code",             (PyCFunction)test_L_code,        METH_NOARGS},
 #endif
+    {"getargs_c",               getargs_c,                       METH_VARARGS},
     {"getargs_s",               getargs_s,                       METH_VARARGS},
     {"getargs_s_star",          getargs_s_star,                  METH_VARARGS},
     {"getargs_s_hash",          getargs_s_hash,                  METH_VARARGS},