1 files changed, 8 insertions, 1 deletions
diff --git a/src/lib/utils/data_src.cpp b/src/lib/utils/data_src.cpp
index 0c06f2fe4..7da94d7c0 100644
--- a/src/lib/utils/data_src.cpp
+++ b/src/lib/utils/data_src.cpp
@@ -8,9 +8,12 @@
 
 #include <botan/data_src.h>
 #include <botan/exceptn.h>
-#include <fstream>
 #include <algorithm>
 
+#if defined(BOTAN_TARGET_OS_HAS_FILESYSTEM)
+  #include <fstream>
+#endif
+
 namespace Botan {
 
 /*
@@ -98,6 +101,8 @@ DataSource_Memory::DataSource_Memory(const std::string& in) :
    {
    }
 
+#if defined(BOTAN_TARGET_OS_HAS_FILESYSTEM)
+
 /*
 * Read from a stream
 */
@@ -209,4 +214,6 @@ DataSource_Stream::~DataSource_Stream()
    delete m_source_p;
    }
 
+#endif
+
 }