diff --git a/SentenceLength.py b/SentenceLength.py
index 4ee13bc..5d5b3db 100644
--- a/SentenceLength.py
+++ b/SentenceLength.py
@@ -28,20 +28,21 @@ def findAverageSentence(filePath, delimiters, minLength):
 
 def main():
     userFile = input("Enter the file path to the .txt file you wish to analyze.\n")
+    isFile = os.path.isfile(userFile)
+    while isFile != True:
+        print("Enter a valid file")
+        userFile = input("Enter the file path to the .txt file you wish to analyze.\n")
+        isFile = os.path.isfile(userFile)
+        
+
+
     userDelimeters = input("Enter the characters (punctuation) that you want to be sentence delimiters separated by spaces.\n")
     userDelimeters = userDelimeters.split(" ")
     minLength = input("Enter the minimum length of a word (must be a positive integer).\n")
     
     minLenPro = ""
 
-    for i in range(len(minLength)):
-        # print("1234567890".contains(minLength[i]))
-        if (minLength[i] in "1234567890") == False:
-            minLenPro = minLenPro + ""
-        else:
-            minLenPro = minLenPro + minLength[i] 
-
-    print(minLenPro)
+    
 
     print("The average sentence length is", findAverageSentence(userFile, userDelimeters, minLength))