diff --git a/allvars.c b/allvars.c
index 07b6f6fee7bfc2d9af51b5203b3f127f5cf897e2..6e2cb8ab42675312e54577b778aa2a1a9b849cdb 100644
--- a/allvars.c
+++ b/allvars.c
@@ -26,7 +26,6 @@ struct timespec begin, finish, begin0, begink, finishk;
 struct sectorlist ** sectorhead;
 long * histo_send, size_of_grid;
 double * grid, *gridss, *gridss_real, *gridss_img, *gridss_w;
-fftw_complex *fftwgrid;
 
 #ifdef USE_MPI
     MPI_Win slabwin;
diff --git a/allvars.h b/allvars.h
index 48f4e57fed880a8672d81792c4420a5e5697b6f4..0c31127a8155bba365207294209578c0d6e0279d 100644
--- a/allvars.h
+++ b/allvars.h
@@ -131,7 +131,6 @@ extern clock_t start, end, start0, startk, endk;
 extern struct timespec begin, finish, begin0, begink, finishk;
 extern long * histo_send, size_of_grid;
 extern double * grid, *gridss, *gridss_real, *gridss_img, *gridss_w;
-extern fftw_complex *fftwgrid;
 
 #ifdef USE_MPI
     extern  MPI_Win slabwin;
diff --git a/fourier_transform.c b/fourier_transform.c
index 7648e785206122677979f59b787d65778533a4dd..a0af7fd9c0a045ec9c120eb59435621aa848b392 100644
--- a/fourier_transform.c
+++ b/fourier_transform.c
@@ -10,6 +10,7 @@ void fftw_data(){
         clock_gettime(CLOCK_MONOTONIC, &begin);
         start = clock();
         fftw_plan plan;
+        fftw_complex *fftwgrid;
         ptrdiff_t alloc_local, local_n0, local_0_start;
         double norm = 1.0/(double)(param.grid_size_x*param.grid_size_y);
 
@@ -56,6 +57,7 @@ void fftw_data(){
         }
 
         fftw_destroy_plan(plan);
+        fftw_free(fftwgrid);
 
         #ifdef USE_MPI
         MPI_Win_fence(0,slabwin);
@@ -150,7 +152,6 @@ void write_fftw_data(){
         #endif
      #endif //WRITE_DATA
 
-     fftw_free(fftwgrid);
 
      // Phase correction