diff --git a/tests/if.ethlang b/tests/if.ethlang
new file mode 100644
index 0000000..afc4d30
--- /dev/null
+++ b/tests/if.ethlang
@@ -0,0 +1,12 @@
+// expect: 2
+
+fn main()
+{
+    let a = 1;
+
+    if true {
+        a = 2;
+    }
+
+    print_int(a);
+}
diff --git a/tests/test.sh b/tests/test.sh
index da67a72..e30d265 100755
--- a/tests/test.sh
+++ b/tests/test.sh
@@ -15,7 +15,7 @@ run_test_file() {
 
     echo "- $(basename $file)"
     set +e
-    output=$(deno run -A $SRC_DIR/main.ts $file --test)
+    output=$(deno run -A --check $SRC_DIR/main.ts $file --test)
     status=$?
     set -e