diff --git a/src/MAKE/Makefile.openmpi b/src/MAKE/Makefile.openmpi
index df2c5b8a33..d08caf2938 100644
--- a/src/MAKE/Makefile.openmpi
+++ b/src/MAKE/Makefile.openmpi
@@ -50,9 +50,9 @@ MPI_LIB =
 # PATH = path for FFT library
 # LIB = name of FFT library
 
-FFT_INC =   -DFFT_FFTW3 -DFFT_SINGLE
+FFT_INC =   -DFFT_FFTW3
 FFT_PATH = 
-FFT_LIB =	-lfftw3f
+FFT_LIB =	-lfftw3
 
 # JPEG library, OPTIONAL
 # see discussion in doc/Section_start.html#2_2 (step 7)
diff --git a/src/MAKE/Makefile.openmpi-omp b/src/MAKE/Makefile.openmpi-omp
index bec6a95301..faf81380b8 100644
--- a/src/MAKE/Makefile.openmpi-omp
+++ b/src/MAKE/Makefile.openmpi-omp
@@ -48,9 +48,9 @@ MPI_LIB =
 # PATH = path for FFT library
 # LIB = name of FFT library
 
-FFT_INC =       -DFFT_FFTW3 -DFFT_SINGLE
+FFT_INC =       -DFFT_FFTW3
 FFT_PATH = 
-FFT_LIB =	-lfftw3f
+FFT_LIB =	-lfftw3
 
 # JPEG library, OPTIONAL
 # see discussion in doc/Section_start.html#2_2 (step 7)