diff --git a/src/MAKE/OPTIONS/Makefile.fftw b/src/MAKE/OPTIONS/Makefile.fftw
index 8a2ba62090..8675aa4bf1 100755
--- a/src/MAKE/OPTIONS/Makefile.fftw
+++ b/src/MAKE/OPTIONS/Makefile.fftw
@@ -50,9 +50,9 @@ MPI_LIB =
 # PATH = path for FFT library
 # LIB = name of FFT library
 
-FFT_INC =    	-DFFT_FFTW -I/usr/local/include
+FFT_INC =    	-DFFT_FFTW3 -I/usr/local/include
 FFT_PATH =      -L/usr/local/lib
-FFT_LIB =	-lfftw
+FFT_LIB =	-lfftw3
 
 # JPEG and/or PNG library
 # see discussion in Section 2.2 (step 7) of manual
diff --git a/src/MAKE/OPTIONS/Makefile.kokkos_cuda b/src/MAKE/OPTIONS/Makefile.kokkos_cuda
index 7e1d9a1c11..b371e6cb5d 100755
--- a/src/MAKE/OPTIONS/Makefile.kokkos_cuda
+++ b/src/MAKE/OPTIONS/Makefile.kokkos_cuda
@@ -52,9 +52,9 @@ MPI_LIB =	-lmpich -lmpl -lpthread
 # PATH = path for FFT library
 # LIB = name of FFT library
 
-FFT_INC =    	-DFFT_FFTW
+FFT_INC =    	-DFFT_FFTW3
 FFT_PATH = 
-FFT_LIB =	-lfftw
+FFT_LIB =	-lfftw3
 
 # JPEG and/or PNG library
 # see discussion in Section 2.2 (step 7) of manual
diff --git a/src/MAKE/OPTIONS/Makefile.pgi b/src/MAKE/OPTIONS/Makefile.pgi
index 9b30574647..e8aaba3785 100644
--- a/src/MAKE/OPTIONS/Makefile.pgi
+++ b/src/MAKE/OPTIONS/Makefile.pgi
@@ -51,9 +51,9 @@ MPI_LIB =	-lmpich
 # PATH = path for FFT library
 # LIB = name of FFT library
 
-FFT_INC =       -DFFT_FFTW
+FFT_INC =       -DFFT_FFTW3
 FFT_PATH = 
-FFT_LIB =	-lfftw
+FFT_LIB =	-lfftw3
 
 # JPEG and/or PNG library
 # see discussion in Section 2.2 (step 7) of manual
diff --git a/src/Make.py b/src/Make.py
index 724baaf2ef..f39e0bbaf7 100755
--- a/src/Make.py
+++ b/src/Make.py
@@ -1528,10 +1528,10 @@ class Fft:
   change FFT settings in makefile
   mode is required, all other args are optional
   removes all current FFT variable settings
-  mode = none or fftw or ...
+  mode = none or fftw or fftw3 of ...
     adds -DFFT_MODE setting
   lib = name of FFT library to link with (def is libname = mode)
-    adds -lliblibname setting
+    adds -lliblib setting, e.g. -llibfftw3
   dir = home dir for include and library files (def = none)
     adds -Idir/include and -Ldir/lib settings
     if set, overrides idir and ldir args