diff --git a/Makefile b/Makefile
index d88d547..7d583e0 100644
--- a/Makefile
+++ b/Makefile
@@ -11,6 +11,10 @@
 clean:   $(addsuffix /clean,$(DIRS))
 install: $(addsuffix /install,$(DIRS))
 
+# Don't try to install in parallel, or depmod gets confused.
+auto_bridge/install: pfe_ctrl/install
+pfe_ctrl/install: fci/install
+
 pfe_ctrl/all:
 	$(MAKE) -C pfe_ctrl $(LINUX_MAKE_FLAGS) KERNELDIR=$(LINUX_DIR) PFE_DIR=../pfe WIFI_ENABLE=y