diff --git a/doc/Changelog b/doc/Changelog
index bc01fd363..0ba7b9a38 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -8,6 +8,7 @@
 	  positive.
 	- Please doxygen's parser for "@" occurrence in doxygen comment.
 	- Fixup contrib/fastrpz.patch
+	- Remove warning about unknown cast-function-type warning pragma.
 
 15 August 2019: Wouter
 	- iana portlist updated.
diff --git a/pythonmod/interface.i b/pythonmod/interface.i
index b4b1c7b70..c02ebaf95 100644
--- a/pythonmod/interface.i
+++ b/pythonmod/interface.i
@@ -4,6 +4,9 @@
 %begin %{
 /* store state of warning output, restored at later pop */
 #pragma GCC diagnostic push
+/* ignore warnings for pragma below, where for older GCC it can produce a
+   warning if the cast-function-type warning is absent. */
+#pragma GCC diagnostic ignored "-Wpragmas"
 /* ignore gcc8 METH_NOARGS function cast warnings for swig function pointers */
 #pragma GCC diagnostic ignored "-Wcast-function-type"
 %}