diff --git a/include/misc.h b/include/misc.h
index 780afde..b5029f8 100644
--- a/include/misc.h
+++ b/include/misc.h
@@ -12,6 +12,7 @@ _Bool checkKey(char *key); //CHECKS IF KEY IS VALID
 _Bool checkText(char *text); //CHECKS IF TEXT IS VALID
 unsigned long countIntLength(int number); //RETURNS LENGTH OF number
 unsigned long countUnusedKeySize(char *text, char *key); //COUNT unusedKeySize
+unsigned long countRepeatedKeySize(char *text, char *key); //COUNT repeatedKeySize
 unsigned long compareTimeMicro(struct timeval startTime, struct timeval finishTime); //COMPARE TIMES IN MICROSECONDS
 
 #endif