diff --git a/dictionary.c b/dictionary.c
index 23dc7d4..aa87819 100644
--- a/dictionary.c
+++ b/dictionary.c
@@ -32,7 +32,7 @@ bool check(const char *word)
     // +1 for NUL character
     char lword[strlen(word) + 1];
 
-    for (int i = 0; i < strlen(lword); i++)
+    for (int i = 0; i < strlen(word); i++)
     {
         lword[i] = tolower((word[i]));
     }