1 files changed, 1 insertions, 1 deletions

diff --git a/libsmctrl_test_gpc_info.c b/libsmctrl_test_gpc_info.c
index 93bfc1e..5ef44b1 100644
--- a/libsmctrl_test_gpc_info.c
+++ b/libsmctrl_test_gpc_info.c
@@ -8,7 +8,7 @@ int main() {
         libsmctrl_get_gpc_info(&num_gpcs, &masks, 1);
         printf("Num GPCs: %d\n", num_gpcs);
         for (int i = 0; i < num_gpcs; i++) {
-                printf("Mask of TPCs associated with GPC %d: %#lx\n", i, masks[i]);
+                printf("Mask of TPCs associated with GPC %d: %#018lx\n", i, masks[i]);
         }
         return 0;
 }