diff --git a/circuits/scripts/build/build_cpp.sh b/circuits/scripts/build/build_cpp.sh
index 29a0eaf90..b30093d8b 100755
--- a/circuits/scripts/build/build_cpp.sh
+++ b/circuits/scripts/build/build_cpp.sh
@@ -156,7 +156,7 @@ for item in "${allowed_circuits[@]}"; do
         continue
     fi
 
-    while [[ ${#pids[@]} -ge 2 ]]; do
+    while [[ ${#pids[@]} -ge 1 ]]; do
         new_pids=()
         for pid in "${pids[@]}"; do
             if kill -0 "$pid" 2>/dev/null; then