1 files changed, 4 insertions, 1 deletions
diff --git a/ruby.c b/ruby.c
index aa6d4a2b9d..a19e08b798 100644
--- a/ruby.c
+++ b/ruby.c
@@ -1747,7 +1747,10 @@ process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
     }
 
     if (opt->src.enc.name)
-	rb_warning("-K is specified; it is for 1.8 compatibility and may cause odd behavior");
+        /* cannot set deprecated category, as enabling deprecation warnings based on flags
+         * has not happened yet.
+         */
+        rb_warning("-K is specified; it is for 1.8 compatibility and may cause odd behavior");
 
 #if USE_MJIT
     if (opt->features.set & FEATURE_BIT(jit)) {