diff --git a/Makefile b/Makefile
index f8bd5db..f800429 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
 ### compile time configuration options
 FFTW3		= yes
 MULTITHREADFFTW	= yes
-SINGLEPRECISION	= yes
+SINGLEPRECISION	= no
 HAVEHDF5        = yes
 
 ##############################################################################
diff --git a/main.cc b/main.cc
index 693f8bb..fd43e85 100644
--- a/main.cc
+++ b/main.cc
@@ -1273,7 +1273,7 @@ int main (int argc, const char * argv[])
 	delete the_transfer_function_plugin;
 	delete the_poisson_solver;
 
-#ifdef FFTW3
+#if defined(FFTW3) and not defined(SINGLETHREAD_FFTW)
 	#ifdef SINGLE_PRECISION
 	fftwf_cleanup_threads();
 	#else