diff --git a/mailnews/imap/Makefile.in b/mailnews/imap/Makefile.in
index 703a2c1ffb23..4b3b329cfc7a 100644
--- a/mailnews/imap/Makefile.in
+++ b/mailnews/imap/Makefile.in
@@ -28,9 +28,5 @@ include $(DEPTH)/config/autoconf.mk
 
 DIRS		= public src build
 
-ifdef ENABLE_TESTS
-DIRS		+= tests
-endif
-
 include $(topsrcdir)/config/rules.mk