diff --git a/src/lexer/lexer_utils.c b/src/lexer/lexer_utils.c
index e4a9bab..833b274 100644
--- a/src/lexer/lexer_utils.c
+++ b/src/lexer/lexer_utils.c
@@ -60,31 +60,31 @@ static void set_token_keyword(struct token *tok, char *begin, ssize_t size)
 {
     if (tok->type != TOKEN_NULL || size == 0)
         return;
-    if (strncmp(begin, "if", size) == 0)
+    if (strncmp(begin, "if", size) == 0 && size == 2)
     {
         tok->type = TOKEN_IF;
     }
-    else if (strncmp(begin, "fi", size) == 0)
+    else if (strncmp(begin, "fi", size) == 0 && size == 2)
     {
         tok->type = TOKEN_FI;
     }
-    else if (strncmp(begin, "then", size) == 0)
+    else if (strncmp(begin, "then", size) == 0 && size == 4)
     {
         tok->type = TOKEN_THEN;
     }
-    else if (strncmp(begin, "else", size) == 0)
+    else if (strncmp(begin, "else", size) == 0 && size == 4)
     {
         tok->type = TOKEN_ELSE;
     }
-    else if (strncmp(begin, "elif", size) == 0)
+    else if (strncmp(begin, "elif", size) == 0 && size == 4)
     {
         tok->type = TOKEN_ELIF;
     }
-    else if (strncmp(begin, "&&", size) == 0)
+    else if (strncmp(begin, "&&", size) == 0 && size == 2)
     {
         tok->type = TOKEN_AND;
     }
-    else if (strncmp(begin, "||", size) == 0)
+    else if (strncmp(begin, "||", size) == 0 && size == 2)
     {
         tok->type = TOKEN_OR;
     }