diff --git a/memory-constraints.macros b/memory-constraints.macros
index 046ddd7..f097cc2 100644
--- a/memory-constraints.macros
+++ b/memory-constraints.macros
@@ -18,7 +18,7 @@
         mem_per_process="$_core_memory" \
         max_mem=$(awk '/MemTotal/ { print $2 }' /proc/meminfo) \
         max_jobs="$(($max_mem / ($mem_per_process * 1000)))" \
-        test "$_threads" -gt "$max_jobs" && $_threads="$max_jobs" && echo "Warning: Reducing number of jobs to $max_jobs because of memory limits" \
+        test "$_threads" -gt "$max_jobs" && _threads="$max_jobs" && echo "Warning: Reducing number of jobs to $max_jobs because of memory limits" \
         test "$_threads" -le 0 && $_threads=1 && echo "Warning: Do not use the parallel build at all becuse of memory limits" \
     fi \
     %global jobs $_threads \