diff --git a/apps/powertrace/Makefile.powertrace b/apps/powertrace/Makefile.powertrace
index 0b2d5631e..06253cd77 100644
--- a/apps/powertrace/Makefile.powertrace
+++ b/apps/powertrace/Makefile.powertrace
@@ -1,2 +1,5 @@
 powertrace_src = powertrace.c
+ifndef POWERTRACE_TOOLS_MAKEFILE_INCLUDED
+POWERTRACE_TOOLS_MAKEFILE_INCLUDED = 1
 -include $(CONTIKI)/tools/powertrace/Makefile.powertrace
+endif #POWERTRACE_TOOLS_MAKEFILE_INCLUDED