diff --git a/checkin_notes b/checkin_notes
index 5d6423a8b6..42e4a95391 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -8335,3 +8335,9 @@ David  2 Oct 2009
             util_ops.inc
         ops/
             (most).php
+
+David  2 Oct 2009
+    - wrapper: fix fraction done feature
+
+    samples/wrapper/
+        wrapper.cpp
diff --git a/samples/wrapper/wrapper.cpp b/samples/wrapper/wrapper.cpp
index cbe5e4cfa5..acb90f8c3e 100644
--- a/samples/wrapper/wrapper.cpp
+++ b/samples/wrapper/wrapper.cpp
@@ -112,7 +112,7 @@ struct TASK {
         FILE* f = fopen(fraction_done_filename.c_str(), "r");
         if (!f) return 0;
         double frac;
-        int n = fscanf(f, "%f", &frac);
+        int n = fscanf(f, "%lf", &frac);
         fclose(f);
         if (n != 1) return 0;
         if (frac < 0) return 0;