diff --git a/ST_grid.c b/ST_grid.c
index 4970db89..2a1603ea 100644
--- a/ST_grid.c
+++ b/ST_grid.c
@@ -298,6 +298,7 @@ void save_sxw_memory(RealD * grid_roots_max, RealD* grid_rootsXphen,
 		RealD* grid_roots_active, RealD* grid_roots_active_rel,
 		RealD* grid_roots_active_sum, RealD* grid_phen, RealD* grid_prod_bmass,
 		RealD* grid_prod_pctlive);
+void _deallocate_memory(void);
 //void SXW_init( Bool init_SW );
 
 
@@ -643,6 +644,7 @@ void runGrid(void)
 		printf("\routputting files took approximately %.2f seconds\n",
 				((double) (clock() - prog_Time) / CLOCKS_PER_SEC));
 	_free_grid_memory(); // free our allocated memory since we do not need it anymore
+	_deallocate_memory(); // sxw memory.
 	/*if(UseProgressBar)*/printf("!\n");
 }
 
diff --git a/sxw.c b/sxw.c
index 1984b850..bcbd4461 100644
--- a/sxw.c
+++ b/sxw.c
@@ -133,6 +133,7 @@ static void SXW_Reinit(void);
 void load_sxw_memory( RealD * grid_roots_max, RealD* grid_rootsXphen, RealD* grid_roots_active, RealD* grid_roots_active_rel, RealD* grid_roots_active_sum, RealD* grid_phen, RealD* grid_prod_bmass, RealD* grid_prod_pctlive );
 void save_sxw_memory( RealD * grid_roots_max, RealD* grid_rootsXphen, RealD* grid_roots_active, RealD* grid_roots_active_rel, RealD* grid_roots_active_sum, RealD* grid_phen, RealD* grid_prod_bmass, RealD* grid_prod_pctlive );
 void free_sxw_memory( void );
+void _deallocate_memory(void);
 
 /****************** Begin Function Code ********************/
 /***********************************************************/
@@ -447,6 +448,15 @@ static void _allocate_memory(void){
 	transp_window->SoS_array = (RealF*) Mem_Calloc(transp_window->size, sizeof(RealF), "_allocate_memory: transp_window->SoS_array");
 }
 
+/* Deallocate any sxw local pointers. When running the non-gridded mode
+ * there is no need to call this since we only have one transp_window variable */
+void _deallocate_memory(void){
+	Mem_Free(transp_window->ratios);
+	Mem_Free(transp_window->transp);
+	Mem_Free(transp_window->SoS_array);
+	Mem_Free(transp_window);
+}
+
 static void  _read_files( void ) {
 /*======================================================*/
   /* read list of input files.   */