diff --git a/tests/conformance/CMakeLists.txt b/tests/conformance/CMakeLists.txt
index e00e9853..fb29f27f 100644
--- a/tests/conformance/CMakeLists.txt
+++ b/tests/conformance/CMakeLists.txt
@@ -426,7 +426,8 @@ endforeach()
 # compare to ref file
 # non regression comparison
 
-# Tolerances given by Table G.1
+# Tolerances given by Part 4 - Table G.1
+# Peak is set to 4 only
 
 foreach(numFileJP2 RANGE 1 9)
 
@@ -434,9 +435,6 @@ foreach(numFileJP2 RANGE 1 9)
   set( filenameInput "file${numFileJP2}.jp2" )
   set( filenameRef   jp2_${numFileJP2}.tif )
 
-  # Get corresponding tests parameters
-  list(GET JP2_PEAK_list ${numFileJP2}  PEAK_limit)
-
   add_test(NAME ETS-JP2-${filenameInput}-decode
     COMMAND opj_decompress
     -i ${INPUT_CONF}/${filenameInput}
@@ -449,7 +447,7 @@ foreach(numFileJP2 RANGE 1 9)
     -t ${TEMP}/${filenameInput}.tif
     -n 3
     -p 4:4:4
-    -m 4:4:4
+    -m 1:1:1
     -s b_t_
   )