diff --git a/Makefile b/Makefile
index d78c895d..b0b0b545 100644
--- a/Makefile
+++ b/Makefile
@@ -16,6 +16,7 @@ games \
 mbr \
 mkinitrd \
 regress \
+tix \
 utils \
 kernel
 
@@ -133,7 +134,7 @@ $(SORTIX_REPOSITORY_DIR)/$(HOST): $(SORTIX_REPOSITORY_DIR)
 
 .PHONY: clean-core
 clean-core:
-	(for D in $(MODULES) tix; do $(MAKE) clean $(SUBMAKE_OPTIONS) --directory $$D || exit $$?; done)
+	(for D in $(MODULES); do $(MAKE) clean $(SUBMAKE_OPTIONS) --directory $$D || exit $$?; done)
 
 .PHONY: clean-ports
 clean-ports:
diff --git a/system/Makefile b/system/Makefile
index 6269052c..4614816a 100644
--- a/system/Makefile
+++ b/system/Makefile
@@ -29,6 +29,7 @@ clean:
 	$(MAKE) -B -C $(SRCDIR)/ext clean
 	$(MAKE) -B -C $(SRCDIR)/mbr clean
 	$(MAKE) -B -C $(SRCDIR)/systest clean
+	$(MAKE) -B -C $(SRCDIR)/tix clean
 	$(MAKE) -B -C $(SRCDIR)/kernel clean
 
 # Set up the base filesystem.
@@ -80,6 +81,7 @@ system:
 	$(MAKE) -B -C $(SRCDIR)/ext install DESTDIR=$(ROOT) C_INCLUDE_PATH=$(ROOT)/include CPLUS_INCLUDE_PATH=$(ROOT)/include LIBRARY_PATH=$(ROOT)/$(cputype)/lib
 	$(MAKE) -B -C $(SRCDIR)/mbr install DESTDIR=$(ROOT) C_INCLUDE_PATH=$(ROOT)/include CPLUS_INCLUDE_PATH=$(ROOT)/include LIBRARY_PATH=$(ROOT)/$(cputype)/lib
 	$(MAKE) -B -C $(SRCDIR)/systest install DESTDIR=$(ROOT) C_INCLUDE_PATH=$(ROOT)/include CPLUS_INCLUDE_PATH=$(ROOT)/include LIBRARY_PATH=$(ROOT)/$(cputype)/lib
+	$(MAKE) -B -C $(SRCDIR)/tix install DESTDIR=$(ROOT) C_INCLUDE_PATH=$(ROOT)/include CPLUS_INCLUDE_PATH=$(ROOT)/include LIBRARY_PATH=$(ROOT)/$(cputype)/lib
 	$(MAKE) -B -C $(SRCDIR)/kernel install DESTDIR=$(ROOT) C_INCLUDE_PATH=$(ROOT)/include CPLUS_INCLUDE_PATH=$(ROOT)/include LIBRARY_PATH=$(ROOT)/$(cputype)/libs
 
 # Rebuild and install the kernel