diff --git a/master.cfg b/master.cfg
index 37266a7..d3fd2ee 100644
--- a/master.cfg
+++ b/master.cfg
@@ -783,6 +783,21 @@ command must not make BuildBot halt on failure."""
         self.flunkOnFailure = False
         self.flunkOnWarnings = False
 
+class ComputeTryBuildCount (steps.BuildStep):
+    def run (self):
+        istry = props.getProperty ('scheduler').startswith ('try')
+
+        if not istry:
+            count = 0
+        else:
+            con = sqlite3.connect (db_file)
+            c = con.cursor ()
+            c.execute ('SELECT COUNT(*) FROM logs WHERE commitid = "%s" AND branch = "%s" AND trysched = 1' % (sourcestamp.revision, branch))
+            count = c.fetchone ()[0]
+            con.close ()
+
+        self.setproperty ('try_count', count, 'ComputeTryBuildCount')
+
 
 def scheduler_is_racy (step):
     return step.getProperty ('scheduler').startswith ('racy')
@@ -808,20 +823,7 @@ def scheduler_is_not_racy_do (step):
 def scheduler_is_not_racy_try_do (step):
     return scheduler_is_not_racy (step) and scheduler_is_not_try (step)
 
-@util.renderer
-def compute_try_build_count (props):
-    istry = props.getProperty ('scheduler').startswith ('try')
 
-    if not istry:
-        return { "try_count" : "0" }
-
-    con = sqlite3.connect (db_file)
-    c = con.cursor ()
-    c.execute ('SELECT COUNT(*) FROM logs WHERE commitid = "%s" AND branch = "%s" AND trysched = 1' % (sourcestamp.revision, branch))
-    count = c.fetchone ()[0]
-    con.close ()
-
-    return { "try_count" : count }
 
 #######################
 #### Build Factory ####
@@ -927,8 +929,7 @@ The parameters of the class are:
         self.addStep (CloneOrUpdateGDBRepo ())
 
         # Set the count of the try build
-        self.addStep (steps.SetProperties (properties = compute_try_build_count),
-                      hideStepIf = scheduler_is_not_try)
+        self.addStep (ComputeTryBuildCount (hideStepIf = scheduler_is_not_try))
 
         if self.run_testsuite:
             self.addStep (CopyOldGDBSumFile (doStepIf = scheduler_is_not_racy_try_do,