diff --git a/source/Lib/CommonLib/TypeDef.h b/source/Lib/CommonLib/TypeDef.h
index a6fe87cf98b7775d80fe13a0cce614527a7f3643..2e1d1f0261da9e2b55981db81df88d060f6dfd46 100644
--- a/source/Lib/CommonLib/TypeDef.h
+++ b/source/Lib/CommonLib/TypeDef.h
@@ -51,8 +51,7 @@
 #include <cassert>
 
 //########### place macros to be removed in next cycle below this line ###############
-#define JVET_R0041                                        1 // JVET-R0041: Picture types related constraints
-
+#define JVET_R0080                                        1 // JVET-R0080, Change the syntax condition for pps_tile_idx_delta_present_flag. When the value of pps_num_slices_in_pic_minus1 is greater than 1 instead of 0, the syntax element of pps_tile_idx_delta_present_flag is signalled.
 #define JVET_R0064                                        1 // JVET-R0064, aspect 2: Move the flag scaling_matrix_for_lfnst_disabled_flag from the scaling_list_data( ) syntax to the SPS.
 
 #define RETRAIN_CABAC                                     1 // CABAC initial values retrained on VTM-9.0rc1
@@ -60,7 +59,7 @@
 #define JVET_R0058                                        1 // JVET-R0058: the combination of RPR, subpictures, and scalability
 
 #define JVET_R0185_OLS_DPB_CLEANUP                        1 // JVET-R0185: Replace if( !vps_all_independent_layers_flag ) condition on vps_num_dpb_params syntax element with if(!each_layer_is_an_ols_flag)
-                                                            //             Change vps_num_dpb_params to vps_num_dpb_params_minus1 and change the semantics to a “two-way?constraint
+                                                            //             Change vps_num_dpb_params to vps_num_dpb_params_minus1 and change the semantics to a �two-way?constraint
                                                             //             Signal DPB parameters for OLS in this case only if(!each_layer_is_an_ols_flag)
 
 #define JVET_R0078_DISABLE_CHROMA_DBF_OFFSET_SINGALLING   1 // JVET-R0078: disable chroma DBF offset signalling
diff --git a/source/Lib/DecoderLib/VLCReader.cpp b/source/Lib/DecoderLib/VLCReader.cpp
index ba1acdcf67ebb6d0a689c13209294452cad9ca47..4232927c1c2fe9b48b9e7f0acb451b017cde371c 100644
--- a/source/Lib/DecoderLib/VLCReader.cpp
+++ b/source/Lib/DecoderLib/VLCReader.cpp
@@ -568,8 +568,11 @@ void HLSyntaxReader::parsePPS( PPS* pcPPS )
 
       READ_UVLC( uiCode, "num_slices_in_pic_minus1" );                pcPPS->setNumSlicesInPic( uiCode + 1 );
       CHECK(pcPPS->getNumSlicesInPic() > MAX_SLICES,                  "Number of slices in picture exceeds valid range");
-
+#if JVET_R0080
+      if ((pcPPS->getNumSlicesInPic() - 1) > 1)
+#else
       if ((pcPPS->getNumSlicesInPic() - 1) > 0)
+#endif
       {
         READ_CODE(1, uiCode, "tile_idx_delta_present_flag");
         pcPPS->setTileIdxDeltaPresentFlag(uiCode == 1);
diff --git a/source/Lib/EncoderLib/VLCWriter.cpp b/source/Lib/EncoderLib/VLCWriter.cpp
index 58460ac2a860faba23e1f3ee464873fb61ab1f8b..48d2b3e334f3fead7a898357297f966b25cb903e 100644
--- a/source/Lib/EncoderLib/VLCWriter.cpp
+++ b/source/Lib/EncoderLib/VLCWriter.cpp
@@ -357,7 +357,11 @@ void HLSWriter::codePPS( const PPS* pcPPS )
     if (pcPPS->getRectSliceFlag() & !(pcPPS->getSingleSlicePerSubPicFlag()))
     {
       WRITE_UVLC( pcPPS->getNumSlicesInPic( ) - 1, "num_slices_in_pic_minus1" );
+#if JVET_R0080
+      if ((pcPPS->getNumSlicesInPic() - 1) > 1)
+#else
       if ((pcPPS->getNumSlicesInPic() - 1) > 0)
+#endif
       {
         WRITE_FLAG(pcPPS->getTileIdxDeltaPresentFlag() ? 1 : 0, "tile_idx_delta_present_flag");
       }