diff --git a/Misc/NEWS.d/next/Library/2019-03-09-18-01-24.bpo-36251.zOp9l0.rst b/Misc/NEWS.d/next/Library/2019-03-09-18-01-24.bpo-36251.zOp9l0.rst
new file mode 100644
index 0000000..5138b0a
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2019-03-09-18-01-24.bpo-36251.zOp9l0.rst
@@ -0,0 +1,2 @@
+Fix format strings used for stderrprinter and re.Match reprs. Patch by
+Stephan Hohe.
diff --git a/Modules/_sre.c b/Modules/_sre.c
index a97ce77..4d2bdcc 100644
--- a/Modules/_sre.c
+++ b/Modules/_sre.c
@@ -2319,7 +2319,7 @@
     if (group0 == NULL)
         return NULL;
     result = PyUnicode_FromFormat(
-            "<%s object; span=(%d, %d), match=%.50R>",
+            "<%s object; span=(%zd, %zd), match=%.50R>",
             Py_TYPE(self)->tp_name,
             self->mark[0], self->mark[1], group0);
     Py_DECREF(group0);
diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index ed4e12b..d886e96 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -407,7 +407,7 @@
 static PyObject *
 stdprinter_repr(PyStdPrinter_Object *self)
 {
-    return PyUnicode_FromFormat("<stdprinter(fd=%d) object at 0x%x>",
+    return PyUnicode_FromFormat("<stdprinter(fd=%d) object at %p>",
                                 self->fd, self);
 }