diff --git a/Makefile.win b/Makefile.win
index 50c216ee320..80f2e0d5b49 100644
--- a/Makefile.win
+++ b/Makefile.win
@@ -158,18 +158,18 @@ eunit: couch
 exunit: export BUILDDIR = $(shell echo %cd%)
 exunit: export MIX_ENV=test
 exunit: export ERL_LIBS = $(shell echo %cd%)\src
-exunit: export ERL_AFLAGS = -config $(shell echo %cd%)/rel/files/eunit.config
+exunit: export ERL_AFLAGS = $(shell echo "-config rel/files/eunit.config")
 exunit: export COUCHDB_QUERY_SERVER_JAVASCRIPT = $(shell echo %cd%)/bin/couchjs $(shell echo %cd%)/share/server/main.js
 exunit: couch elixir-init setup-eunit elixir-check-formatted elixir-credo
 	@mix test --cover --trace $(EXUNIT_OPTS)
 
 setup-eunit: export BUILDDIR = $(shell pwd)
-setup-eunit: export ERL_AFLAGS = "-config $(shell echo %cd%)/rel/files/eunit.config")
+setup-eunit: export ERL_AFLAGS = $(shell echo "-config rel/files/eunit.config")
 setup-eunit:
 	@$(REBAR) setup_eunit 2> nul
 
 just-eunit: export BUILDDIR = $(shell pwd)
-just-eunit: export ERL_AFLAGS = "-config $(shell echo %cd%)/rel/files/eunit.config")
+just-eunit: export ERL_AFLAGS = $(shell echo "-config rel/files/eunit.config")
 just-eunit:
 	@$(REBAR) -r eunit $(EUNIT_OPTS)
 
diff --git a/src/couch/priv/couch_js/86/main.cpp b/src/couch/priv/couch_js/86/main.cpp
index d75f119b267..06ff224287c 100644
--- a/src/couch/priv/couch_js/86/main.cpp
+++ b/src/couch/priv/couch_js/86/main.cpp
@@ -287,17 +287,9 @@ int runWithContext(JSContext* cx, couch_args* args) {
 
         // Compile and run
         JS::CompileOptions options(cx);
-        options.setFileAndLine(filename, 1);
         JS::RootedScript script(cx);
-        FILE* fp;
 
-        fp = fopen(args->scripts[i], "r");
-        if(fp == NULL) {
-            fprintf(stderr, "Failed to read file: %s\n", filename);
-            return 3;
-        }
-        script = JS::CompileUtf8File(cx, options, fp);
-        fclose(fp);
+        script = JS::CompileUtf8Path(cx, options, filename);
         if (!script) {
             JS::RootedValue exc(cx);
             if(!JS_GetPendingException(cx, &exc)) {
diff --git a/src/couch/rebar.config.script b/src/couch/rebar.config.script
index a288a96eb4c..ba907b0a2f6 100644
--- a/src/couch/rebar.config.script
+++ b/src/couch/rebar.config.script
@@ -155,8 +155,13 @@ end.
         };
     {unix, _} when SMVsn == "91" ->
         {
-            "-DXP_UNIX -I/usr/include/mozjs-91 -I/usr/local/include/mozjs-91 -I/opt/homebrew/include/mozjs-91/ -std=c++17 -Wno-invalid-offsetof",
-            "-L/usr/local/lib -L /opt/homebrew/lib/ -std=c++17 -lmozjs-91 -lm"
+            "$CFLAGS -DXP_UNIX -I/usr/include/mozjs-91 -I/usr/local/include/mozjs-91 -I/opt/homebrew/include/mozjs-91/ -std=c++17 -Wno-invalid-offsetof",
+            "$LDFLAGS -L/usr/local/lib -L /opt/homebrew/lib/ -std=c++17 -lmozjs-91 -lm"
+        };
+    {win32, _} when SMVsn == "91" ->
+        {
+            "/std:c++17 /DXP_WIN",
+            "$LDFLAGS mozjs-91.lib"
         }
 end.
 
@@ -189,7 +194,7 @@ IcuDarwinEnv = [{"CFLAGS", "-DXP_UNIX -I/usr/local/opt/icu4c/include -I/opt/home
 IcuBsdEnv = [{"CFLAGS", "-DXP_UNIX -I/usr/local/include"},
              {"LDFLAGS", "-L/usr/local/lib"}].
 IcuWinEnv = [{"CFLAGS", "$DRV_CFLAGS /DXP_WIN"},
-             {"LDFLAGS", "icuin.lib icudt.lib icuuc.lib"}].
+             {"LDFLAGS", "$LDFLAGS icuin.lib icudt.lib icuuc.lib"}].
 
 ComparePath = "priv/couch_ejson_compare.so".
 CompareSrc = ["priv/couch_ejson_compare/*.c"].