diff --git a/browser/components/sidebar/Makefile.in b/browser/components/sidebar/Makefile.in
index e93a8f368b8..b4ef556d9aa 100644
--- a/browser/components/sidebar/Makefile.in
+++ b/browser/components/sidebar/Makefile.in
@@ -35,7 +35,7 @@
 #
 # ***** END LICENSE BLOCK *****
 
-DEPTH		= ../../..
+DEPTH		= ../../../..
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@