diff --git a/libraries/AP_Common/Arduino.mk b/libraries/AP_Common/Arduino.mk
index be6928f17c..3d19e12593 100644
--- a/libraries/AP_Common/Arduino.mk
+++ b/libraries/AP_Common/Arduino.mk
@@ -60,6 +60,12 @@ endif
 #
 ifeq ($(SKETCHBOOK),)
   SKETCHBOOK		:=	$(shell cd $(SRCROOT)/.. && pwd)
+  ifeq ($(wildcard $(SKETCHBOOK)/libraries),)
+    SKETCHBOOK		:=	$(shell cd $(SRCROOT)/../.. && pwd)
+  endif
+  ifeq ($(wildcard $(SKETCHBOOK)/libraries),)
+    SKETCHBOOK		:=	$(shell cd $(SRCROOT)/../../.. && pwd)
+  endif
   ifeq ($(wildcard $(SKETCHBOOK)/libraries),)
     SKETCHBOOK		:=	$(shell cd $(SRCROOT)/../../../.. && pwd)
   endif