1 files changed, 1 insertions, 0 deletions
diff --git a/sprintf.c b/sprintf.c
index 28f4ff90e0..3b5d38afa0 100644
--- a/sprintf.c
+++ b/sprintf.c
@@ -490,6 +490,7 @@ rb_str_format(int argc, const VALUE *argv, VALUE fmt)
 				buf[blen++] = ' ';
 			    }
 			}
+			rb_enc_associate(result, enc);
 			break;
 		    }
 		}