diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
index 692e1b1..aced86d 100644
--- a/tools/build/Makefile.build
+++ b/tools/build/Makefile.build
@@ -37,6 +37,9 @@
 build-file := $(dir)/Build
 include $(build-file)
 
+quiet_cmd_flex  = FLEX     $@
+quiet_cmd_bison = BISON    $@
+
 # Create directory unless it exists
 quiet_cmd_mkdir = MKDIR    $(dir $@)
       cmd_mkdir = mkdir -p $(dir $@)