diff --git a/opm/io/eclipse/EclOutput.hpp b/opm/io/eclipse/EclOutput.hpp
index b7f815396..ca88fab48 100644
--- a/opm/io/eclipse/EclOutput.hpp
+++ b/opm/io/eclipse/EclOutput.hpp
@@ -72,6 +72,7 @@ public:
     }
 
     void message(const std::string& msg);
+    void flushStream();
 
     friend class OutputStream::Restart;
     friend class OutputStream::SummarySpecification;
diff --git a/src/opm/io/eclipse/EclOutput.cpp b/src/opm/io/eclipse/EclOutput.cpp
index 18e978500..50608ef2f 100644
--- a/src/opm/io/eclipse/EclOutput.cpp
+++ b/src/opm/io/eclipse/EclOutput.cpp
@@ -86,6 +86,10 @@ void EclOutput::message(const std::string& msg)
     this->write(msg, std::vector<char>{});
 }
 
+void EclOutput::flushStream()
+{
+    this->ofileH.flush();
+}
 
 void EclOutput::writeBinaryHeader(const std::string&arrName, int size, eclArrType arrType)
 {
diff --git a/src/opm/io/eclipse/OutputStream.cpp b/src/opm/io/eclipse/OutputStream.cpp
index acc013c50..39a3a3f4b 100644
--- a/src/opm/io/eclipse/OutputStream.cpp
+++ b/src/opm/io/eclipse/OutputStream.cpp
@@ -744,8 +744,7 @@ void Opm::EclIO::OutputStream::SummarySpecification::rewindStream()
 
 void Opm::EclIO::OutputStream::SummarySpecification::flushStream()
 {
-    // Benefits from EclOutput friendship
-    this->stream().ofileH.flush();
+    this->stream().flushStream();
 }
 
 Opm::EclIO::EclOutput&