diff --git a/src/formatter.py b/src/formatter.py
index 4bbb02f..dff9c81 100644
--- a/src/formatter.py
+++ b/src/formatter.py
@@ -193,6 +193,12 @@ class Formatter(Expr.Visitor[str], Stmt.Visitor[str]):
 
     def format_format_spec(self, spec: FormatSpec) -> str:
         res: str = ""
+        if spec.options.alignment is not None:
+            if spec.options.alignment.fill is not None:
+                res += spec.options.alignment.fill.lexeme
+            res += spec.options.alignment.align.lexeme
+        if spec.options.zfill:
+            res += "0"
         if spec.options.sign is not None:
             res += spec.options.sign.lexeme
         if spec.number.integral.width is not None: