1 files changed, 1 insertions, 1 deletions
diff --git a/str.h b/str.h
index 4d02cfc..76fd186 100644
--- a/str.h
+++ b/str.h
@@ -32,7 +32,7 @@
  * Returns a newly allocated string that contains the beginning of the
  * provided string up to the provided char.
  */
-char   *str_split(char *, char);
+char   *str_split(const char *, char);
 
 /*
  * Replaces a char in-place in the provided string.