--- firefox-52.0esr.bak/config/baseconfig.mk	2017-03-09 09:11:38.434104687 +0100
+++ firefox-52.0esr/config/baseconfig.mk	2017-03-09 11:26:48.571245921 +0100
@@ -4,7 +4,7 @@
 # whether a normal build is happening or whether the check is running.
 includedir := $(includedir)/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
 idldir = $(datadir)/idl/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
-installdir = $(libdir)/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
+installdir = $(libdir)/$(MOZ_APP_NAME)
 sdkdir = $(libdir)/$(MOZ_APP_NAME)-devel-$(MOZ_APP_VERSION)
 ifeq (.,$(DEPTH))
 DIST = dist