diff --git a/src/parser/parser.h b/src/parser/parser.h
index bf88adc..d10cae8 100644
--- a/src/parser/parser.h
+++ b/src/parser/parser.h
@@ -3,24 +3,6 @@
 
 #include "utils/ast/ast.h"
 
-// === Macros
-
-#define PEEK_TOKEN()                                                           \
-    peek_token();                                                              \
-    if (token == NULL)                                                         \
-    {                                                                          \
-        puts("Internal error: cannot get the following token");                \
-        return NULL;                                                           \
-    }
-
-#define POP_TOKEN()                                                            \
-    pop_token();                                                               \
-    if (token == NULL)                                                         \
-    {                                                                          \
-        puts("Internal error: cannot get the following token");                \
-        return NULL;                                                           \
-    }
-
 /* @brief Builds the AST representation of the next command to execute.
  *
  * @return Returns the AST representation of the next command to execute.
diff --git a/src/parser/parsing_utils.h b/src/parser/parsing_utils.h
index 6981a13..a133ef0 100644
--- a/src/parser/parsing_utils.h
+++ b/src/parser/parsing_utils.h
@@ -1,3 +1,23 @@
+#ifndef PARSING_UTILS_H
+#define PARSING_UTILS_H
+
+// === Macros
+
+#define PEEK_TOKEN()                                                           \
+    peek_token();                                                              \
+    if (token == NULL)                                                         \
+    {                                                                          \
+        puts("Internal error: cannot get the following token");                \
+        return NULL;                                                           \
+    }
+
+#define POP_TOKEN()                                                            \
+    pop_token();                                                               \
+    if (token == NULL)                                                         \
+    {                                                                          \
+        puts("Internal error: cannot get the following token");                \
+        return NULL;                                                           \
+    }
 /* @brief Parses a simple list of words (command and arguments)
  * and returns the resulting ast
  */
@@ -23,3 +43,5 @@ struct ast* parse_and_or(void);
 /*
  */
 struct ast* parse_else_clause(void);
+
+#define /* ! PARSING_UTILS_H */