diff --git a/cmd/xfe/Makefile b/cmd/xfe/Makefile
index db28ebbde017..f0165e00a635 100644
--- a/cmd/xfe/Makefile
+++ b/cmd/xfe/Makefile
@@ -512,6 +512,10 @@ NS_RULES_MK	= 1
 
 DEFINES		+= -DNEW_DECODERS
 
+ifdef XFE_PREF_ADVANCED_PASSIVE_FTP
+DEFINES		+= -DXFE_PREF_ADVANCED_PASSIVE_FTP
+endif
+
 ifdef USE_3PANE
 DEFINES		+= -DUSE_3PANE
 endif
diff --git a/cmd/xfe/src/Makefile b/cmd/xfe/src/Makefile
index e11872a5d130..6c8010ef1e24 100644
--- a/cmd/xfe/src/Makefile
+++ b/cmd/xfe/src/Makefile
@@ -278,6 +278,10 @@ CPPSRCS		+= \
 DEFINES += -DMOZ_TASKBAR
 endif
 
+ifdef XFE_PREF_ADVANCED_PASSIVE_FTP
+DEFINES		+= -DXFE_PREF_ADVANCED_PASSIVE_FTP
+endif
+
 ifdef MOZ_MAIL_NEWS
 CPPSRCS		+= \
 		  TextEditorView.cpp \