1 files changed, 4 insertions, 3 deletions
diff --git a/src/main.c b/src/main.c
index 7740d52..a018cef 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,11 +1,12 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <inttypes.h>
 
 #include "fvm.h"
 
-static void printnum(struct fvm *vm) {
+static void print_num(struct fvm *vm) {
   int64_t n = fvm_pop(vm);
-  printf("%lld\n", n);
+  printf("%" PRId64 "\n", n);
 }
 
 int main(int argc, char **argv) {
@@ -15,7 +16,7 @@ int main(int argc, char **argv) {
     return -1;
   }
   vm.syscall_table = malloc(256 * sizeof(fvm_syscall_fn_t));
-  vm.syscall_table[1] = &printnum;
+  vm.syscall_table[1] = &print_num;
   FILE* fp = fopen(argv[1], "rb");
   if (fp == NULL) {
     fprintf(stderr, "Failed to open file.\n");