diff --git a/phase2/master.cfg b/phase2/master.cfg
index ae994cd..1267cf1 100644
--- a/phase2/master.cfg
+++ b/phase2/master.cfg
@@ -70,7 +70,6 @@ if ini.has_option("phase2", "persistent"):
 	persistent = ini.getboolean("phase2", "persistent")
 
 c['workers'] = []
-max_builds = dict()
 
 for section in ini.sections():
 	if section.startswith("worker "):
@@ -78,21 +77,12 @@ for section in ini.sections():
 			ini.has_option(section, "phase") and ini.getint(section, "phase") == 2:
 			name = ini.get(section, "name")
 			password = ini.get(section, "password")
-			sl_props = { 'shared_wd': False }
-			max_builds[name] = 1
-
-			if ini.has_option(section, "builds"):
-				max_builds[name] = ini.getint(section, "builds")
-
-			if max_builds[name] == 1:
-				sl_props['shared_wd'] = True
+			sl_props = { 'shared_wd': True }
 
 			if ini.has_option(section, "shared_wd"):
 				sl_props['shared_wd'] = ini.getboolean(section, "shared_wd")
-				if sl_props['shared_wd'] and (max_builds != 1):
-					raise ValueError('max_builds must be 1 with shared workdir!')
 
-			c['workers'].append(Worker(name, password, max_builds = max_builds[name], properties = sl_props))
+			c['workers'].append(Worker(name, password, max_builds = 1, properties = sl_props))
 
 # 'workerPortnum' defines the TCP port to listen on for connections from workers.
 # This must match the value configured into the buildworkers (with their
@@ -277,13 +267,6 @@ def GetDirectorySuffix(props):
 			return "-%02d.%02d" %(int(m.group(1)), int(m.group(2)))
 	return ""
 
-@properties.renderer
-def GetNumJobs(props):
-	if props.hasProperty("workername") and props.hasProperty("nproc"):
-		return str(int(props["nproc"]) / max_builds[props["workername"]])
-	else:
-		return "1"
-
 @properties.renderer
 def GetCwd(props):
 	if props.hasProperty("builddir"):
@@ -574,7 +557,7 @@ for arch in arches:
 		description = "Building packages",
 		workdir = "build/sdk",
 		timeout = 3600,
-		command = ["make", Interpolate("-j%(kw:jobs)s", jobs=GetNumJobs), "IGNORE_ERRORS=n m y", "BUILD_LOG=1", "CONFIG_AUTOREMOVE=y", "CONFIG_SIGNED_PACKAGES="],
+		command = ["make", Interpolate("-j%(prop:nproc:-1)s"), "IGNORE_ERRORS=n m y", "BUILD_LOG=1", "CONFIG_AUTOREMOVE=y", "CONFIG_SIGNED_PACKAGES="],
 		env = {'CCACHE_BASEDIR': Interpolate("%(kw:cwd)s", cwd=GetCwd)},
 		haltOnFailure = True))