diff --git a/tools/distro-tool b/tools/distro-tool
index 4ba9d504ef..8fd4b93c64 100755
--- a/tools/distro-tool
+++ b/tools/distro-tool
@@ -21,7 +21,7 @@ CHECK_FILTER_CLASS=All
 PROGRESS=yes
 IS_MIRROR=yes
 VERBOSE=0
-WORKER_THREADS=32
+WORKER_THREADS=16
 
 LOCKFILE=/tmp/distro_tool.lock
 WORKFILES_I=/tmp/distro_tool.in