diff --git a/common.h b/common.h
index 6c3d5b15e..60da2416a 100644
--- a/common.h
+++ b/common.h
@@ -183,7 +183,7 @@ extern "C" {
 
 #define ALLOCA_ALIGN 63UL
 
-#define NUM_BUFFERS (MAX_CPU_NUMBER * 2 * MAX_PARALLEL_NUMBER)
+#define NUM_BUFFERS MAX(64,(MAX_CPU_NUMBER * 2 * MAX_PARALLEL_NUMBER))
 
 #ifdef NEEDBUNDERSCORE
 #define BLASFUNC(FUNC) FUNC##_