diff --git a/src/sv.c b/src/sv.c
index 279e8b2..e5b3c13 100644
--- a/src/sv.c
+++ b/src/sv.c
@@ -10,11 +10,11 @@ static int to_lower(char c) {
 }
 
 SV sv_str(const char *s){
-  SV str = {s == NULL ? 0 : strlen(s), (char *)s};
+  SV str = {s == NULL ? 0 : strlen(s), s};
   return str;
 }
 SV sv_strn(const char *s, size_t len){
-  SV str = {len, (char *) s};
+  SV str = {len, s};
   return str; 
 }
 SV sv_trim(SV s){