diff --git a/source/adios2/engine/bp5/BP5Engine.h b/source/adios2/engine/bp5/BP5Engine.h
index be7f40a3b1..42464119a3 100644
--- a/source/adios2/engine/bp5/BP5Engine.h
+++ b/source/adios2/engine/bp5/BP5Engine.h
@@ -172,10 +172,10 @@ class BP5Engine
     MACRO(StatsBlockSize, SizeBytes, size_t, DefaultStatsBlockSize)                                \
     MACRO(Threads, UInt, unsigned int, 0)                                                          \
     MACRO(UseOneTimeAttributes, Bool, bool, true)                                                  \
-    MACRO(FlattenSteps, Bool, bool, false)                                                         \
-    MACRO(IgnoreFlattenSteps, Bool, bool, false)                                                   \
     MACRO(RemoteDataPath, String, std::string, "")                                                 \
-    MACRO(MaxOpenFilesAtOnce, UInt, unsigned int, UINT_MAX)
+    MACRO(MaxOpenFilesAtOnce, UInt, unsigned int, UINT_MAX)                                        \
+    MACRO(FlattenSteps, Bool, bool, false)                                                         \
+    MACRO(IgnoreFlattenSteps, Bool, bool, false)
 
     struct BP5Params
     {
diff --git a/source/adios2/toolkit/format/bp5/BP5Deserializer.cpp b/source/adios2/toolkit/format/bp5/BP5Deserializer.cpp
index 5d5940f256..c930bab1c8 100644
--- a/source/adios2/toolkit/format/bp5/BP5Deserializer.cpp
+++ b/source/adios2/toolkit/format/bp5/BP5Deserializer.cpp
@@ -1996,6 +1996,12 @@ int BP5Deserializer::FindOffset(size_t Dims, const size_t *Size, const size_t *I
  * *******************************
  */
 
+BP5Deserializer::BP5Deserializer(bool WriterIsRowMajor, bool ReaderIsRowMajor,
+                                 bool RandomAccessMode)
+   : BP5Deserializer::BP5Deserializer(WriterIsRowMajor, ReaderIsRowMajor, RandomAccessMode, false)
+{
+}
+
 BP5Deserializer::BP5Deserializer(bool WriterIsRowMajor, bool ReaderIsRowMajor,
                                  bool RandomAccessMode, bool FlattenSteps)
 : m_WriterIsRowMajor{WriterIsRowMajor}, m_ReaderIsRowMajor{ReaderIsRowMajor},
diff --git a/source/adios2/toolkit/format/bp5/BP5Deserializer.h b/source/adios2/toolkit/format/bp5/BP5Deserializer.h
index 9f5e8d32cd..3f70806ef5 100644
--- a/source/adios2/toolkit/format/bp5/BP5Deserializer.h
+++ b/source/adios2/toolkit/format/bp5/BP5Deserializer.h
@@ -35,8 +35,8 @@ class BP5Deserializer : virtual public BP5Base
 {
 
 public:
-    BP5Deserializer(bool WriterIsRowMajor, bool ReaderIsRowMajor, bool RandomAccessMode = false,
-                    bool FlattenSteps = false);
+    BP5Deserializer(bool WriterIsRowMajor, bool ReaderIsRowMajor, bool RandomAccessMode = false);
+    BP5Deserializer(bool WriterIsRowMajor, bool ReaderIsRowMajor, bool RandomAccessMode, bool FlattenSteps);
 
     ~BP5Deserializer();