diff -r 116396961ad1 -r a16d9143689d src/cpu/o3/iew.hh
--- a/src/cpu/o3/iew.hh	Sat Jan 12 22:11:16 2013 -0600
+++ b/src/cpu/o3/iew.hh	Sun Jan 13 17:22:11 2013 -0600
@@ -213,7 +213,8 @@
 
     void incrWb(InstSeqNum &sn)
     {
-        if (++wbOutstanding == wbMax)
+        ++wbOutstanding;
+        if (wbOutstanding == wbMax)
             ableToIssue = false;
         DPRINTF(IEW, "wbOutstanding: %i [sn:%lli]\n", wbOutstanding, sn);
         assert(wbOutstanding <= wbMax);
@@ -224,8 +225,9 @@
 
     void decrWb(InstSeqNum &sn)
     {
-        if (wbOutstanding-- == wbMax)
+        if (wbOutstanding == wbMax)
             ableToIssue = true;
+        wbOutstanding--;
         DPRINTF(IEW, "wbOutstanding: %i [sn:%lli]\n", wbOutstanding, sn);
         assert(wbOutstanding >= 0);
 #ifdef DEBUG