diff --git a/checkin_notes b/checkin_notes
index 2530127dd1..dc31aaff6d 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -3935,3 +3935,13 @@ David  7 July 2011
 
     client/
         client_state.cpp
+
+David  7 July 2011
+    - client: fix bug introduced in [23765] that produced garbage
+         in <coproc> elements in sched req msgs and elsewhere.
+         peak_flops is a double.
+         If you print it using %d, everything from that point forward
+         is messed up.
+
+     lib/
+         coproc.cpp
diff --git a/lib/coproc.cpp b/lib/coproc.cpp
index 7c151c2713..0645432121 100644
--- a/lib/coproc.cpp
+++ b/lib/coproc.cpp
@@ -222,7 +222,7 @@ void COPROC_NVIDIA::write_xml(MIOFILE& f, bool include_request) {
     }
 
     f.printf(
-        "   <peak_flops>%d</peak_flops>\n"
+        "   <peak_flops>%f</peak_flops>\n"
         "   <cudaVersion>%d</cudaVersion>\n"
         "   <drvVersion>%d</drvVersion>\n"
         "   <deviceHandle>%d</deviceHandle>\n"
@@ -393,7 +393,7 @@ void COPROC_ATI::write_xml(MIOFILE& f, bool include_request) {
         write_request(f);
     }
     f.printf(
-        "   <peak_flops>%d</peak_flops>\n"
+        "   <peak_flops>%f</peak_flops>\n"
         "   <CALVersion>%s</CALVersion>\n"
         "   <target>%d</target>\n"
         "   <localRAM>%d</localRAM>\n"