1 files changed, 3 insertions, 3 deletions
diff --git a/lzip.h b/lzip.h
index 9dd8989..dfb28ee 100644
--- a/lzip.h
+++ b/lzip.h
@@ -89,15 +89,15 @@ struct File_header
     return sz;
     }
 
-  bool dictionary_size( const int sz )
+  bool dictionary_size( const unsigned sz )
     {
     if( sz >= min_dictionary_size && sz <= max_dictionary_size )
       {
       data[5] = real_bits( sz - 1 );
       if( sz > min_dictionary_size )
         {
-        const int base_size = 1 << data[5];
-        const int wedge = base_size / 16;
+        const unsigned base_size = 1 << data[5];
+        const unsigned wedge = base_size / 16;
         for( int i = 7; i >= 1; --i )
           if( base_size - ( i * wedge ) >= sz )
             { data[5] |= ( i << 5 ); break; }