diff --git a/fftw_benchmark/README.md b/fftw_benchmark/README.md
index 0c9f4a0..e9b7d9d 100644
--- a/fftw_benchmark/README.md
+++ b/fftw_benchmark/README.md
@@ -17,4 +17,4 @@ which uses the `fujitsu-fftw` Spack module.
 Also if you don't want to use the Fujitsu compiler you must also set the
 `FORTCOMP` environment variable to your compiler of choice, set the
 `FORTOPT` environment variable with your optimisation flags and set the
-`FORTLIB` to the empty string.
+`export FORTLIB=" "` (note the space).
diff --git a/fftw_benchmark/main.F90 b/fftw_benchmark/main.F90
index dd16f96..afcb56a 100644
--- a/fftw_benchmark/main.F90
+++ b/fftw_benchmark/main.F90
@@ -13,7 +13,7 @@ program main
     integer, parameter :: n = 10000
 
     ! Number of times to repeat FFT cycle
-    integer, parameter :: n_repeats = 1000
+    integer, parameter :: n_repeats = 100000
 
     ! Storage array for input/output
     real(4) :: test_in(n+2)