diff --git a/single/RubberBandSingle.cpp b/single/RubberBandSingle.cpp
index 91d78d0..8cdcb14 100644
--- a/single/RubberBandSingle.cpp
+++ b/single/RubberBandSingle.cpp
@@ -44,6 +44,8 @@
     standalone library.
 */
 
+#ifndef ALREADY_CONFIGURED
+
 #define USE_BQRESAMPLER 1
 
 #define NO_TIMING 1
@@ -56,6 +58,8 @@
 #define USE_BUILTIN_FFT 1
 #endif
 
+#endif
+
 #include "../src/faster/AudioCurveCalculator.cpp"
 #include "../src/faster/CompoundAudioCurve.cpp"
 #include "../src/faster/HighFrequencyAudioCurve.cpp"