diff --git a/examples/root_dir/expected/a.js.map.golden b/examples/root_dir/expected/a.js.map.golden
index 4cd080bf..f2533ba9 100644
--- a/examples/root_dir/expected/a.js.map.golden
+++ b/examples/root_dir/expected/a.js.map.golden
@@ -1,5 +1,5 @@
 {
     "sources": [
-        "../../src/a.ts"
+        "../src/a.ts"
     ]
 }
\ No newline at end of file
diff --git a/examples/root_dir/expected/b.js.map.golden b/examples/root_dir/expected/b.js.map.golden
index f21f8a56..33da7c1d 100644
--- a/examples/root_dir/expected/b.js.map.golden
+++ b/examples/root_dir/expected/b.js.map.golden
@@ -1,5 +1,5 @@
 {
     "sources": [
-        "../../src/b.ts"
+        "../src/b.ts"
     ]
 }
\ No newline at end of file
diff --git a/examples/root_dir/expected/sub/c.js.map.golden b/examples/root_dir/expected/sub/c.js.map.golden
index fff83c01..c112944d 100644
--- a/examples/root_dir/expected/sub/c.js.map.golden
+++ b/examples/root_dir/expected/sub/c.js.map.golden
@@ -1,5 +1,5 @@
 {
     "sources": [
-        "../../../src/sub/c.ts"
+        "../../src/sub/c.ts"
     ]
 }
\ No newline at end of file
diff --git a/examples/source_root/expected_subdir.js.map.golden b/examples/source_root/expected_subdir.js.map.golden
index d165041c..7b28ba13 100644
--- a/examples/source_root/expected_subdir.js.map.golden
+++ b/examples/source_root/expected_subdir.js.map.golden
@@ -1,6 +1,6 @@
 {
     "sources": [
-        "../src/subdir.ts"
+        "src/subdir.ts"
     ],
     "sourceRoot": "../../../debug/source"
 }
\ No newline at end of file
diff --git a/swc/private/swc.bzl b/swc/private/swc.bzl
index 3331bdd2..353d7237 100644
--- a/swc/private/swc.bzl
+++ b/swc/private/swc.bzl
@@ -193,7 +193,10 @@ def _calculate_source_file(ctx, src):
 
     # out of src subdir
     if src_pkg:
-        s = paths.join(s, "/".join([".." for _ in src_pkg.split("/")]))
+        src_pkg_depth = len(src_pkg.split("/"))
+        root_dir_depth = len(ctx.attr.root_dir.split("/")) if ctx.attr.root_dir else 0
+        effective_depth = max(0, src_pkg_depth - root_dir_depth)
+        s = paths.join(s, "/".join([".." for _ in range(effective_depth)]))
 
     # out of the out dir
     if ctx.attr.out_dir: