diff --git a/src/output/p_mpeg1_2.cpp b/src/output/p_mpeg1_2.cpp
index a3d8a692b..934a01380 100644
--- a/src/output/p_mpeg1_2.cpp
+++ b/src/output/p_mpeg1_2.cpp
@@ -40,11 +40,12 @@ mpeg1_2_video_packetizer_c(generic_reader_c *p_reader,
 {
 
   set_codec_id((boost::format("V_MPEG%1%") % version).str());
-  if (!display_dimensions_or_aspect_ratio_set())
+  if (!display_dimensions_or_aspect_ratio_set()) {
     if ((0 < dwidth) && (0 < dheight))
       set_video_display_dimensions(dwidth, dheight, PARAMETER_SOURCE_BITSTREAM);
     else
       m_aspect_ratio_extracted = false;
+  }
 
   timecode_factory_application_mode = TFA_SHORT_QUEUEING;