diff --git a/BUILD.gn b/BUILD.gn
index 5bb2d2ef24..9e996d9ff5 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -243,9 +243,8 @@ run_node("bundle") {
 
 source_set("libdeno_nosnapshot") {
   bundle_outputs = get_target_outputs(":bundle")
-  bundle_location = rebase_path(bundle_outputs[0])
-  bundle_rel_location = rebase_path(bundle_outputs[0], root_build_dir)
-  bundle_map_location = rebase_path(bundle_outputs[1])
+  bundle_location = rebase_path(bundle_outputs[0], root_build_dir)
+  bundle_map_location = rebase_path(bundle_outputs[1], root_build_dir)
   inputs = bundle_outputs
   sources = [
     "libdeno/from_filesystem.cc",
@@ -257,7 +256,6 @@ source_set("libdeno_nosnapshot") {
   configs += [ ":deno_config" ]
   defines = [
     "BUNDLE_LOCATION=\"$bundle_location\"",
-    "BUNDLE_REL_LOCATION=\"$bundle_rel_location\"",
     "BUNDLE_MAP_LOCATION=\"$bundle_map_location\"",
   ]
 }
diff --git a/libdeno/from_filesystem.cc b/libdeno/from_filesystem.cc
index fa50c05151..0852f1558b 100644
--- a/libdeno/from_filesystem.cc
+++ b/libdeno/from_filesystem.cc
@@ -15,11 +15,17 @@
 namespace deno {
 
 Deno* NewFromFileSystem(void* data, deno_recv_cb cb) {
-  std::string js_source;
-  CHECK(deno::ReadFileToString(BUNDLE_LOCATION, &js_source));
+  std::string exe_path;
+  CHECK(deno::ExePath(&exe_path));
+  std::string exe_dir = deno::Dirname(exe_path);  // Always ends with a slash.
 
+  std::string js_source_path = exe_dir + BUNDLE_LOCATION;
+  std::string js_source;
+  CHECK(deno::ReadFileToString(js_source_path.c_str(), &js_source));
+
+  std::string js_source_map_path = exe_dir + BUNDLE_MAP_LOCATION;
   std::string js_source_map;
-  CHECK(deno::ReadFileToString(BUNDLE_MAP_LOCATION, &js_source_map));
+  CHECK(deno::ReadFileToString(js_source_map_path.c_str(), &js_source_map));
 
   Deno* d = new Deno;
   d->currentArgs = nullptr;
@@ -36,10 +42,9 @@ Deno* NewFromFileSystem(void* data, deno_recv_cb cb) {
   {
     v8::HandleScope handle_scope(isolate);
     auto context = v8::Context::New(isolate);
-    // BUNDLE_LOCATION is absolute so deno_ns can load the bundle independently
-    // of the cwd. However for source maps to work, the bundle location relative
-    // to the build path must be supplied: BUNDLE_REL_LOCATION.
-    InitializeContext(isolate, context, BUNDLE_REL_LOCATION, js_source,
+    // For source maps to work, the bundle location that is passed to
+    // InitializeContext must be a relative path.
+    InitializeContext(isolate, context, BUNDLE_LOCATION, js_source,
                       &js_source_map);
     d->context.Reset(d->isolate, context);
   }