diff --git a/fact.c b/fact.c
index ec6d12fce69b4271b251a97b35a96d8f7fd0af0f..5516bd4bdd2aa7168e9658483279b65e88991d97 100644
--- a/fact.c
+++ b/fact.c
@@ -1,5 +1,5 @@
 //
-// Modified on 09/05/2020.
+// Modified on 25/04/2020.
 //
 #include <errno.h>
 #include <sys/types.h>
@@ -162,7 +162,7 @@ void *read_write() {
 }
 
 #define DEFAULT_NO_THREADS 2
-#define MAX_NO_THREADS 20
+#define MAX_NO_THREADS 40
 // MAIN PROGRAMME
 int main (int argc, char *argv[]) {
 
@@ -219,7 +219,7 @@ int main (int argc, char *argv[]) {
   */
     // Open input and output files
     f.in = fopen(inputfile, "r");
-    f.out = fopen(outputfile, "a+");
+    f.out = fopen(outputfile, "w");
     if ((f.in == NULL) || (f.out == NULL)) {
         printf("Incorrect input_file or output_file name\n");
         exit(EXIT_FAILURE);
@@ -255,3 +255,4 @@ int main (int argc, char *argv[]) {
     fclose(f.out);
     return (EXIT_SUCCESS);
 }
+