diff --git a/Makefile.in b/Makefile.in
index 648ab4e37e3a..88ae67f43abf 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -264,10 +264,6 @@ ifdef MOZ_XPINSTALL
 tier_50_dirs     +=  xpinstall
 endif
 
-ifdef NS_TRACE_MALLOC
-tier_50_dirs += tools/trace-malloc
-endif
-
 ifdef MOZ_JSDEBUGGER
 tier_50_dirs += js/jsd
 endif
@@ -279,6 +275,10 @@ tier_50_dirs += \
 		$(NULL)
 endif
 
+ifdef NS_TRACE_MALLOC
+tier_50_dirs += tools/trace-malloc
+endif
+
 ifdef MOZ_PSM
 tier_50_dirs	+= security/manager
 endif