1 files changed, 1 insertions, 0 deletions
diff --git a/string.c b/string.c
index a2f9e4af4b..f9730012c5 100644
--- a/string.c
+++ b/string.c
@@ -6889,6 +6889,7 @@ rb_str_force_encoding(VALUE str, VALUE enc)
 {
     str_modifiable(str);
     rb_enc_associate(str, rb_to_encoding(enc));
+    ENC_CODERANGE_CLEAR(str);
     return str;
 }