diff --git a/c_formatter_42/formatters/preprocessor_directive.py b/c_formatter_42/formatters/preprocessor_directive.py
index 27d763d..ed86469 100644
--- a/c_formatter_42/formatters/preprocessor_directive.py
+++ b/c_formatter_42/formatters/preprocessor_directive.py
@@ -35,8 +35,8 @@ def preprocessor_directive(content: str) -> str:
             indent -= 1
 
     # if newline doesn't follows preprocessor part, insert one
-    lastline_index = idented[-1][0]
     try:
+        lastline_index = idented[-1][0]
         if lines[lastline_index + 1] != "":
             lines.insert(lastline_index + 1, "")
     except IndexError:
diff --git a/setup.cfg b/setup.cfg
index 194e78f..0bead7b 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = c_formatter_42
-version = 0.2.0
+version = 0.2.1
 description = formatting tool complient with 42 school's norm
 long_description = file: README.md
 long_description_content_type = text/markdown
diff --git a/tests/test_run.py b/tests/test_run.py
index 12874e6..cb47b03 100644
--- a/tests/test_run.py
+++ b/tests/test_run.py
@@ -53,3 +53,18 @@ def test_run_align_break_column_max():
 
 def test_run_func_decl_single_tab_and_global_aligned():
     pass
+
+
+def test_basic():
+    input = """
+int main(int argc, char*argv[]){
+	return 0;
+}
+"""
+    output = """
+int\tmain(int argc, char *argv[])
+{
+	return (0);
+}
+"""
+    assert output == run_all(input)