diff --git a/samples/cxx/combustor/combustor.cpp b/samples/cxx/combustor/combustor.cpp
index 75a5c78a4..ce0ad24d1 100644
--- a/samples/cxx/combustor/combustor.cpp
+++ b/samples/cxx/combustor/combustor.cpp
@@ -129,7 +129,6 @@ void runexample()
         }
         f << std::endl;
     }
-    f.close();
 }
 
 int main()
diff --git a/src/base/application.cpp b/src/base/application.cpp
index 78526623a..889140376 100644
--- a/src/base/application.cpp
+++ b/src/base/application.cpp
@@ -435,7 +435,6 @@ std::string Application::findInputFile(const std::string& name)
             inname = dirs[i] + "/" + name;
             std::ifstream fin(inname);
             if (fin) {
-                fin.close();
                 return inname;
             }
         }
diff --git a/src/clib/ctonedim.cpp b/src/clib/ctonedim.cpp
index a50c866e4..167cb276d 100644
--- a/src/clib/ctonedim.cpp
+++ b/src/clib/ctonedim.cpp
@@ -554,7 +554,6 @@ extern "C" {
             } else {
                 ofstream fout(fname);
                 SimCabinet::item(i).showSolution(fout);
-                fout.close();
             }
             return 0;
         } catch (...) {
diff --git a/src/clib/ctrpath.cpp b/src/clib/ctrpath.cpp
index dea5aee70..dace69342 100644
--- a/src/clib/ctrpath.cpp
+++ b/src/clib/ctrpath.cpp
@@ -235,7 +235,6 @@ extern "C" {
             } else {
                 DiagramCabinet::item(i).writeData(f);
             }
-            f.close();
             return 0;
         } catch (...) {
             return handleAllExceptions(-1, ERR);
diff --git a/src/clib/ctxml.cpp b/src/clib/ctxml.cpp
index b39c1814d..208011f36 100644
--- a/src/clib/ctxml.cpp
+++ b/src/clib/ctxml.cpp
@@ -95,7 +95,6 @@ extern "C" {
                                    "file "+string(file)+" not found.");
             }
             XmlCabinet::item(i).build(f);
-            f.close();
             return 0;
         } catch (...) {
             return handleAllExceptions(-1, ERR);
diff --git a/src/numerics/BandMatrix.cpp b/src/numerics/BandMatrix.cpp
index 0e12055e4..c0ee7527e 100644
--- a/src/numerics/BandMatrix.cpp
+++ b/src/numerics/BandMatrix.cpp
@@ -240,7 +240,6 @@ int BandMatrix::factor()
         m_factored = false;
         ofstream fout("bandmatrix.csv");
         fout << *this << endl;
-        fout.close();
     }
     return info;
 }
@@ -270,7 +269,6 @@ int BandMatrix::solve(doublereal* b, size_t nrhs, size_t ldb)
     if (info != 0) {
         ofstream fout("bandmatrix.csv");
         fout << *this << endl;
-        fout.close();
     }
     return info;
 }
diff --git a/test_problems/shared/fileLog.h b/test_problems/shared/fileLog.h
index bb9e2882c..2596acebc 100644
--- a/test_problems/shared/fileLog.h
+++ b/test_problems/shared/fileLog.h
@@ -18,10 +18,6 @@ public:
         m_fs << std::endl;
     }
 
-    virtual ~fileLog() {
-        m_fs.close();
-    }
-
     std::string m_fName;
     std::fstream m_fs;
 };