diff --git a/checkin_notes b/checkin_notes
index 5b79474d0a..9105f04c3c 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -5036,3 +5036,9 @@ Charlie 3 June 2009
         
     mac_installer/
         make_GridRepublic.sh
+
+Charlie 3 June 2009
+    - client: Fix missing argument in printf statements.
+    
+    lib/
+        coproc.cpp,h
diff --git a/lib/coproc.cpp b/lib/coproc.cpp
index 013f4aaab5..f4144ee5b3 100644
--- a/lib/coproc.cpp
+++ b/lib/coproc.cpp
@@ -292,9 +292,9 @@ void COPROC_CUDA::get(
         if (use_all || !cuda_compare(gpus[i], best, true)) {
             best.device_nums[best.count] = gpus[i].device_num;
             best.count++;
-            sprintf(buf2, "NVIDIA GPU %d: %s", buf);
+            sprintf(buf2, "NVIDIA GPU %d: %s", best.count, buf);
         } else {
-            sprintf(buf2, "NVIDIA GPU %d (not used): %s", buf);
+            sprintf(buf2, "NVIDIA GPU %d (not used): %s", best.count, buf);
         }
         strings.push_back(string(buf2));
     }