diff --git a/eeschema/files-io.cpp b/eeschema/files-io.cpp
index 4ef6572b3f..39922f595e 100644
--- a/eeschema/files-io.cpp
+++ b/eeschema/files-io.cpp
@@ -509,6 +509,9 @@ bool SCH_EDIT_FRAME::doAutoSave()
 
     tmp.AssignDir( fn.GetPath() );
 
+    if( !tmp.IsOk() )
+        return false;
+
     if( !IsWritable( tmp ) )
         return false;