diff --git a/netcalc.c b/netcalc.c
index 418d45b..39915fe 100644
--- a/netcalc.c
+++ b/netcalc.c
@@ -374,5 +374,6 @@ int main(int argc, char *argv[]) {
     if (close(SOCKFD) != 0) {
         perror("close");
     }
+    printf("closing\n");
     return 0;
 }
diff --git a/test/cases b/test/cases
index 80637c7..70f42f3 100644
--- a/test/cases
+++ b/test/cases
@@ -8,3 +8,4 @@
 0xDEAD*4294967295
 0x6F56-0xDEAD
 0xDEAD/0
+
diff --git a/test/expected b/test/expected
index 3f052d0..e11c528 100644
--- a/test/expected
+++ b/test/expected
@@ -8,3 +8,4 @@
 calc: failed to calculate
 calc: failed to calculate
 calc: failed to calculate
+closing