diff --git a/Modules/binascii.c b/Modules/binascii.c
index 62beaea..c4c97b5 100644
--- a/Modules/binascii.c
+++ b/Modules/binascii.c
@@ -492,9 +492,13 @@
 		Py_DECREF(rv);
 		return NULL;
 	}
-	_PyString_Resize(&rv, (bin_data - (unsigned char *)PyString_AsString(rv)));
-	if ( rv )
-		return Py_BuildValue("Oi", rv, done);
+	_PyString_Resize(
+		&rv, (bin_data - (unsigned char *)PyString_AsString(rv)));
+	if (rv) {
+		PyObject *rrv = Py_BuildValue("Oi", rv, done);
+		Py_DECREF(rv);
+		return rrv;
+	}
 	return NULL;
 }