diff --git a/sys/modules/Makefile b/sys/modules/Makefile
index 88211cbdeb0..f7c3f9c60ae 100644
--- a/sys/modules/Makefile
+++ b/sys/modules/Makefile
@@ -150,6 +150,7 @@ SUBDIR+=aac \
 	el \
 	em \
 	ep \
+	exca \
 	fe \
 	fpu \
 	gnufpu \