diff --git a/gio/gdbus-2.0/codegen/Makefile.am b/gio/gdbus-2.0/codegen/Makefile.am
index 1b3aba83f..145ccba83 100644
--- a/gio/gdbus-2.0/codegen/Makefile.am
+++ b/gio/gdbus-2.0/codegen/Makefile.am
@@ -23,7 +23,7 @@ CLEANFILES += gdbus-codegen
 EXTRA_DIST += gdbus-codegen.in
 
 gdbus-codegen: gdbus-codegen.in Makefile
-	$(AM_V_GEN) sed -e 's,@libdir\@,$(libdir),' -e 's,@PYTHON\@,$(PYTHON),' $< > $@.tmp && mv $@.tmp $@
+	$(AM_V_GEN) sed -e 's,@libdir\@,$(libdir),' $< > $@.tmp && mv $@.tmp $@
 	@chmod a+x $@
 
 clean-local:
diff --git a/gio/gdbus-2.0/codegen/gdbus-codegen.in b/gio/gdbus-2.0/codegen/gdbus-codegen.in
index aaffd5dc4..16360d61d 100644
--- a/gio/gdbus-2.0/codegen/gdbus-codegen.in
+++ b/gio/gdbus-2.0/codegen/gdbus-codegen.in
@@ -1,4 +1,4 @@
-#!@PYTHON@
+#!/usr/bin/env python
 
 # GDBus - GLib D-Bus Library
 #