diff --git a/Makefile b/Makefile
index f9a75fa97..e971809e8 100644
--- a/Makefile
+++ b/Makefile
@@ -221,8 +221,10 @@ rover: $(ROVER)
 $(S2I_CONTEXT)/Roverfile.lock : $(S2I_CONTEXT)/Roverfile $(S2I_CONTEXT)/apicast-scm-1.rockspec
 	$(ROVER) lock --roverfile=$(S2I_CONTEXT)/Roverfile
 
+lua_modules: export HAVE_EVP_KDF_CTX = 1
 lua_modules: $(ROVER) $(S2I_CONTEXT)/Roverfile.lock
-	$(ROVER) install --roverfile=$(S2I_CONTEXT)/Roverfile > /dev/null
+	# https://github.com/wahern/luaossl/issues/175
+	HAVE_EVP_KDF_CTX=1 $(ROVER) install --roverfile=$(S2I_CONTEXT)/Roverfile > /dev/null
 
 lua_modules/bin/rover:
 	@LUAROCKS_CONFIG=$(S2I_CONTEXT)/config-5.1.lua luarocks install --server=http://luarocks.org/dev lua-rover --tree=lua_modules 1>&2