diff --git a/src/visualizer.h b/src/visualizer.h
index 3794b89c..be5b12ce 100644
--- a/src/visualizer.h
+++ b/src/visualizer.h
@@ -30,7 +30,9 @@
 #include "window.h"
 #include "screen.h"
 
-#include <fftw3.h>
+#ifdef HAVE_FFTW3_H
+# include <fftw3.h>
+#endif
 
 class Visualizer : public Screen<Window>
 {