diff --git a/Misc/NEWS.d/next/Core and Builtins/2019-03-27-22-35-16.bpo-36459.UAvkKp.rst b/Misc/NEWS.d/next/Core and Builtins/2019-03-27-22-35-16.bpo-36459.UAvkKp.rst
new file mode 100644
index 000000000000000..6c234a6a76d9a1f
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2019-03-27-22-35-16.bpo-36459.UAvkKp.rst	
@@ -0,0 +1 @@
+Fix a possible double ``PyMem_FREE()`` due to tokenizer.c's ``tok_nextc()``.
diff --git a/Parser/tokenizer.c b/Parser/tokenizer.c
index 34722f85b94a558..e374c5a4aee615b 100644
--- a/Parser/tokenizer.c
+++ b/Parser/tokenizer.c
@@ -1055,7 +1055,6 @@ tok_nextc(struct tok_state *tok)
                 newbuf = (char *)PyMem_REALLOC(newbuf,
                                                newsize);
                 if (newbuf == NULL) {
-                    PyMem_FREE(tok->buf);
                     tok->done = E_NOMEM;
                     tok->cur = tok->inp;
                     return EOF;