diff --git a/src/HDFrestart.cc b/src/HDFrestart.cc
index 87982290..e2bfa1ab 100644
--- a/src/HDFrestart.cc
+++ b/src/HDFrestart.cc
@@ -1922,10 +1922,12 @@ int HDFrestart::readAtomicData(std::string datasetname, std::vector<int>& data)
     // send data to inactive PEs
     if (gather_data_x_) gatherDataXdir(data);
 
+#ifdef MGMOL_USE_HDF5P
     if (useHdf5p())
     {
         data.erase(std::remove(data.begin(), data.end(), -1), data.end());
     }
+#endif
 
     return 0;
 }
@@ -1974,10 +1976,12 @@ int HDFrestart::readAtomicData(
         }
     }
 
+#ifdef MGMOL_USE_HDF5P
     if (useHdf5p())
     {
         data.erase(std::remove(data.begin(), data.end(), 1e+32), data.end());
     }
+#endif
     if (gather_data_x_) gatherDataXdir(data);
 
     return 0;
@@ -2104,10 +2108,12 @@ int HDFrestart::readAtomicData(
         data.push_back(t);
     }
 
+#ifdef MGMOL_USE_HDF5P
     if (useHdf5p())
     {
         data.erase(std::remove(data.begin(), data.end(), ""), data.end());
     }
+#endif
 
     return 0;
 }
diff --git a/src/Ions.cc b/src/Ions.cc
index 9af0a64e..bc30417b 100644
--- a/src/Ions.cc
+++ b/src/Ions.cc
@@ -947,10 +947,12 @@ void Ions::initFromRestartFile(HDFrestart& h5_file)
     assert(at_numbers.size() == at_nlprojIds.size());
 
     num_ions_ = at_names.size();
+#ifdef MGMOL_USE_HDF5P
     if (!h5_file.useHdf5p())
     {
         mmpi.allreduce(&num_ions_, 1, MPI_SUM);
     }
+#endif
     if (onpe0 && ct.verbose > 0)
     {
         (*MPIdata::sout) << "Ions::setFromRestartFile(), read " << num_ions_
diff --git a/src/tools/SymmetricMatrix.h b/src/tools/SymmetricMatrix.h
index bd887fb3..b7aece1e 100644
--- a/src/tools/SymmetricMatrix.h
+++ b/src/tools/SymmetricMatrix.h
@@ -14,6 +14,7 @@
 #include <cstring>
 #include <map>
 #include <mpi.h>
+#include <stdio.h>
 #include <vector>
 
 // full lower triangular part of symmetric matrix with compact storage