diff --git a/src/run.bash b/src/run.bash
index 685bc8279c..b29846a262 100755
--- a/src/run.bash
+++ b/src/run.bash
@@ -20,6 +20,11 @@ ulimit -c 0
 [ "$(ulimit -H -n)" == "unlimited" ] || ulimit -S -n $(ulimit -H -n)
 [ "$(ulimit -H -d)" == "unlimited" ] || ulimit -S -d $(ulimit -H -d)
 
+# Thread count limit on NetBSD 7.
+if ulimit -T &> /dev/null; then
+	[ "$(ulimit -H -T)" == "unlimited" ] || ulimit -S -T $(ulimit -H -T)
+fi
+
 # allow all.bash to avoid double-build of everything
 rebuild=true
 if [ "$1" = "--no-rebuild" ]; then