diff --git a/printf.c b/printf.c
index ec1f2ef..e5e3a36 100644
--- a/printf.c
+++ b/printf.c
@@ -425,9 +425,9 @@ static size_t _vsnprintf(char* buffer, size_t buffer_len, const char* format, va
       flags |= FLAGS_LONG_LONG;
       format++;
     }
-    if ((*format == 'z')) {
-        flags |= (sizeof(size_t) == 8 ? FLAGS_LONG_LONG : FLAGS_LONG);
-        format++;
+    if (*format == 'z') {
+      flags |= (sizeof(size_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
+      format++;
     }
 
     // evaluate specifier