diff --git a/src/parser/grammar.c b/src/parser/grammar.c
index be26dfc..02098e0 100644
--- a/src/parser/grammar.c
+++ b/src/parser/grammar.c
@@ -73,6 +73,20 @@ static bool init_firsts_map(void)
     return true;
 }
 
+/* @brief: add all the redirection token_types to the first of [rule].
+ *          this also contains IONUMBER
+ */
+static void add_first_redir(enum rule rule)
+{
+    add_first(rule, TOKEN_IONUMBER);
+    add_first(rule, TOKEN_REDIR_LEFT);
+    add_first(rule, TOKEN_REDIR_RIGHT);
+    add_first(rule, TOKEN_REDIR_LEFT_RIGHT);
+    add_first(rule, TOKEN_REDIR_DOUBLE_RIGHT);
+    add_first(rule, TOKEN_REDIR_LEFT_AMP);
+    add_first(rule, TOKEN_REDIR_RIGHT_PIPE);
+}
+
 // === Functions
 
 bool grammar_init(void)
@@ -114,14 +128,11 @@ bool grammar_init(void)
     add_first(RULE_ELSE_CLAUSE, TOKEN_ELIF);
 
     add_first(RULE_ELEMENT, TOKEN_WORD);
-    add_first(RULE_ELEMENT, TOKEN_IONUMBER);
-    add_first(RULE_ELEMENT, TOKEN_REDIRECTION);
+    add_first_redir(RULE_ELEMENT);
 
-    add_first(RULE_REDIRECTION, TOKEN_IONUMBER);
-    add_first(RULE_REDIRECTION, TOKEN_REDIRECTION);
+    add_first_redir(RULE_REDIRECTION);
 
-    add_first(RULE_PREFIX, TOKEN_IONUMBER);
-    add_first(RULE_PREFIX, TOKEN_REDIRECTION);
+    add_first_redir(RULE_PREFIX);
 
     return true;
 }