diff --git a/tools/lkl/Makefile b/tools/lkl/Makefile
index 9ca22b7605e3ad..dfe7f6aef5fe02 100644
--- a/tools/lkl/Makefile
+++ b/tools/lkl/Makefile
@@ -176,10 +176,11 @@ headers_install: $(TARGETS)
 	      include/lkl_config.h $(DESTDIR)$(INCDIR) ; \
 	    cp -r $(OUTPUT)include/lkl $(DESTDIR)$(INCDIR)
 
-libraries_install: $(libs-y:%=$(OUTPUT)%$(SOSUF)) $(OUTPUT)liblkl.a
-	$(call QUIET_INSTALL, libraries) \
+libraries_install: $(call expand-targets,$(libs-y),$(SOSUF)) $(OUTPUT)liblkl.a
+	# filter out special .WAIT targets from install
+	$(if $(filter .%,$^),,$(call QUIET_INSTALL, libraries) \
 	    install -d $(DESTDIR)$(LIBDIR) ; \
-	    install -m 644 $^ $(DESTDIR)$(LIBDIR)
+	    install -m 644 $^ $(DESTDIR)$(LIBDIR))
 
 programs_install: $(call expand-targets,$(progs-y),$(EXESUF))
 	$(call QUIET_INSTALL, programs) \
diff --git a/tools/lkl/Targets b/tools/lkl/Targets
index 3d30bd8be3c840..089a832ee23627 100644
--- a/tools/lkl/Targets
+++ b/tools/lkl/Targets
@@ -2,6 +2,8 @@ libs-y += lib/liblkl
 
 ifneq ($(LKL_HOST_CONFIG_BSD),y)
 libs-$(LKL_HOST_CONFIG_POSIX) += lib/hijack/liblkl-hijack
+# hijack and zpoline targets share object files, breaking parallel builds
+libs-$(LKL_HOST_CONFIG_POSIX) += .WAIT
 libs-$(LKL_HOST_CONFIG_POSIX) += lib/hijack/liblkl-zpoline
 endif
 LDFLAGS_lib/hijack/liblkl-hijack-y += -shared -nodefaultlibs