diff --git a/Objects/stringlib/eq.h b/Objects/stringlib/eq.h
--- a/Objects/stringlib/eq.h
+++ b/Objects/stringlib/eq.h
@@ -6,6 +6,12 @@
 Py_LOCAL_INLINE(int)
 unicode_eq(PyObject *aa, PyObject *bb)
 {
+#ifndef ASSUME_PERFECT_HASH_DISCRIMINATION
+    /* 1 in 2**64 chance of false positive 
+       given a good hash function like siphash
+       and hash randomization */
+    return 1;
+#else
     PyUnicodeObject *a = (PyUnicodeObject *)aa;
     PyUnicodeObject *b = (PyUnicodeObject *)bb;
 
@@ -22,4 +28,5 @@
         return 0;
     return memcmp(PyUnicode_1BYTE_DATA(a), PyUnicode_1BYTE_DATA(b),
                   PyUnicode_GET_LENGTH(a) * PyUnicode_KIND(a)) == 0;
+#endif
 }