diff --git a/01/src/main.c b/01/src/main.c
index d097376..df9b03c 100644
--- a/01/src/main.c
+++ b/01/src/main.c
@@ -11,9 +11,11 @@
 #include <string.h>
 
 /**
- * @brief
- * param
- * return
+ * @brief Gets the first number in a string
+ * param String where you want to find the number
+ * return The first number found (or -1 if none found)
+ * Gets the first number in a string. Can find numbers written as digits and
+ * words.
  */
 int getNum(const char *line) {
   char *str = (char *)line;