1 files changed, 2 insertions, 2 deletions
diff --git a/FL/Fl_Preferences.H b/FL/Fl_Preferences.H
index b5dffe14c..e16ff64d3 100644
--- a/FL/Fl_Preferences.H
+++ b/FL/Fl_Preferences.H
@@ -201,8 +201,8 @@ private:
       RootNode *root_;  // top_ bit set
     };
     char *path_;
-    char dirty_:1;
-    char top_:1;
+    unsigned char dirty_:1;
+    unsigned char top_:1;
   public:
     Node( const char *path );
     ~Node();