diff --git a/gtk2_ardour/main.cc b/gtk2_ardour/main.cc
index 8bcab28788..bc4c4eaaf0 100644
--- a/gtk2_ardour/main.cc
+++ b/gtk2_ardour/main.cc
@@ -35,10 +35,6 @@
 #include <sigc++/bind.h>
 #include <gtkmm/settings.h>
 
-#ifdef HAVE_FFTW35F
-#include <fftw3.h>
-#endif
-
 #include <curl/curl.h>
 
 #include "pbd/error.h"
@@ -315,10 +311,6 @@ int main (int argc, char *argv[])
 	XInitThreads ();
 #endif
 
-#ifdef HAVE_FFTW35F
-	fftwf_make_planner_thread_safe ();
-#endif
-
 #if ENABLE_NLS
 	/* initialize C locale to user preference */
 	if (ARDOUR::translations_are_enabled ()) {
diff --git a/gtk2_ardour/wscript b/gtk2_ardour/wscript
index abf85c265b..1f42ce9bfb 100644
--- a/gtk2_ardour/wscript
+++ b/gtk2_ardour/wscript
@@ -378,8 +378,6 @@ def configure(conf):
 
     autowaf.check_pkg(conf, 'fftw3f', uselib_store='FFTW3F',
                       mandatory=True)
-    autowaf.check_pkg(conf, 'fftw3f', uselib_store='FFTW35F',
-                      atleast_version='3.3.5', mandatory=False)
     autowaf.check_pkg(conf, 'flac', uselib_store='FLAC',
                       atleast_version='1.2.1')
     autowaf.check_pkg(conf, 'gthread-2.0', uselib_store='GTHREAD',