--- a/Makefile
+++ b/Makefile
@@ -71,8 +71,8 @@
 COMMON_TARGETS		+= testcases tools
 # Don't want to nuke the original files if we're installing in-build-tree.
 ifneq ($(BUILD_TREE_STATE),$(BUILD_TREE_SRCDIR_INSTALL))
-INSTALL_TARGETS		+= runtest scenario-groups testscripts
-CLEAN_TARGETS		+= include runtest scenario-groups testscripts
+INSTALL_TARGETS		+= runtest scenario_groups testscripts
+CLEAN_TARGETS		+= include runtest scenario_groups testscripts
 endif
 INSTALL_TARGETS		+= $(COMMON_TARGETS)
 CLEAN_TARGETS		+= $(COMMON_TARGETS) lib