diff --git a/stacktrace.go b/stacktrace.go
index 037d5bb48..c41c98629 100644
--- a/stacktrace.go
+++ b/stacktrace.go
@@ -149,20 +149,36 @@ type Frame struct {
 
 // NewFrame assembles a stacktrace frame out of runtime.Frame.
 func NewFrame(f runtime.Frame) Frame {
-	abspath := f.File
-	filename := f.File
-	function := f.Function
-	var pkg string
-
-	if filename != "" {
-		filename = filepath.Base(filename)
-	} else {
-		filename = unknown
+	var abspath, relpath string
+	// NOTE: f.File paths historically use forward slash as path separator even
+	// on Windows, though this is not yet documented, see
+	// https://golang.org/issues/3335. In any case, filepath.IsAbs can work with
+	// paths with either slash or backslash on Windows.
+	switch {
+	case f.File == "":
+		relpath = unknown
+		// Leave abspath as the empty string to be omitted when serializing
+		// event as JSON.
+		abspath = ""
+	case filepath.IsAbs(f.File):
+		abspath = f.File
+		// TODO: in the general case, it is not trivial to come up with a
+		// "project relative" path with the data we have in run time.
+		// We shall not use filepath.Base because it creates ambiguous paths and
+		// affects the "Suspect Commits" feature.
+		// For now, leave relpath empty to be omitted when serializing the event
+		// as JSON. Improve this later.
+		relpath = ""
+	default:
+		// f.File is a relative path. This may happen when the binary is built
+		// with the -trimpath flag.
+		relpath = f.File
+		// Omit abspath when serializing the event as JSON.
+		abspath = ""
 	}
 
-	if abspath == "" {
-		abspath = unknown
-	}
+	function := f.Function
+	var pkg string
 
 	if function != "" {
 		pkg, function = splitQualifiedFunctionName(function)
@@ -170,7 +186,7 @@ func NewFrame(f runtime.Frame) Frame {
 
 	frame := Frame{
 		AbsPath:  abspath,
-		Filename: filename,
+		Filename: relpath,
 		Lineno:   f.Line,
 		Module:   pkg,
 		Function: function,
diff --git a/stacktrace_external_test.go b/stacktrace_external_test.go
index 788b86beb..0c994c3d6 100644
--- a/stacktrace_external_test.go
+++ b/stacktrace_external_test.go
@@ -60,8 +60,6 @@ func TestNewStacktrace(t *testing.T) {
 				{
 					Function: "f1",
 					Module:   "github.com/getsentry/sentry-go_test",
-					Filename: "stacktrace_external_test.go",
-					AbsPath:  "ignored",
 					Lineno:   18,
 					InApp:    true,
 				},
@@ -72,16 +70,12 @@ func TestNewStacktrace(t *testing.T) {
 				{
 					Function: "f2",
 					Module:   "github.com/getsentry/sentry-go_test",
-					Filename: "stacktrace_external_test.go",
-					AbsPath:  "ignored",
 					Lineno:   22,
 					InApp:    true,
 				},
 				{
 					Function: "f1",
 					Module:   "github.com/getsentry/sentry-go_test",
-					Filename: "stacktrace_external_test.go",
-					AbsPath:  "ignored",
 					Lineno:   18,
 					InApp:    true,
 				},
@@ -97,8 +91,6 @@ func TestNewStacktrace(t *testing.T) {
 				{
 					Function: "f3",
 					Module:   "github.com/getsentry/sentry-go_test",
-					Filename: "stacktrace_external_test.go",
-					AbsPath:  "ignored",
 					Lineno:   25,
 					InApp:    true,
 				},
@@ -128,16 +120,12 @@ func TestExtractStacktrace(t *testing.T) {
 				{
 					Function: "RedPkgErrorsRanger",
 					Module:   "github.com/getsentry/sentry-go_test",
-					Filename: "stacktrace_external_test.go",
-					AbsPath:  "ignored",
 					Lineno:   29,
 					InApp:    true,
 				},
 				{
 					Function: "BluePkgErrorsRanger",
 					Module:   "github.com/getsentry/sentry-go_test",
-					Filename: "stacktrace_external_test.go",
-					AbsPath:  "ignored",
 					Lineno:   33,
 					InApp:    true,
 				},
@@ -149,16 +137,12 @@ func TestExtractStacktrace(t *testing.T) {
 				{
 					Function: "RedPingcapErrorsRanger",
 					Module:   "github.com/getsentry/sentry-go_test",
-					Filename: "stacktrace_external_test.go",
-					AbsPath:  "ignored",
 					Lineno:   37,
 					InApp:    true,
 				},
 				{
 					Function: "BluePingcapErrorsRanger",
 					Module:   "github.com/getsentry/sentry-go_test",
-					Filename: "stacktrace_external_test.go",
-					AbsPath:  "ignored",
 					Lineno:   41,
 					InApp:    true,
 				},
@@ -170,16 +154,12 @@ func TestExtractStacktrace(t *testing.T) {
 				{
 					Function: "RedGoErrorsRanger",
 					Module:   "github.com/getsentry/sentry-go_test",
-					Filename: "stacktrace_external_test.go",
-					AbsPath:  "ignored",
 					Lineno:   45,
 					InApp:    true,
 				},
 				{
 					Function: "BlueGoErrorsRanger",
 					Module:   "github.com/getsentry/sentry-go_test",
-					Filename: "stacktrace_external_test.go",
-					AbsPath:  "ignored",
 					Lineno:   49,
 					InApp:    true,
 				},
@@ -194,6 +174,17 @@ func TestExtractStacktrace(t *testing.T) {
 			}
 			got := sentry.ExtractStacktrace(err)
 			compareStacktrace(t, got, tt.want)
+			// We ignore paths in compareStacktrace because they depend on the
+			// environment where tests are run. However, Frame.Filename should
+			// be a relative path and Frame.AbsPath should be an absolute path.
+			for _, frame := range got.Frames {
+				if !filepath.IsAbs(frame.AbsPath) {
+					t.Errorf("got %q, want absolute path", frame.AbsPath)
+				}
+				if filepath.IsAbs(frame.Filename) {
+					t.Errorf("got %q, want relative path", frame.Filename)
+				}
+			}
 		})
 	}
 }
@@ -226,6 +217,6 @@ func compareStacktrace(t *testing.T, got, want *sentry.Stacktrace) {
 func stacktraceDiff(x, y *sentry.Stacktrace) string {
 	return cmp.Diff(
 		x, y,
-		cmpopts.IgnoreFields(sentry.Frame{}, "AbsPath"),
+		cmpopts.IgnoreFields(sentry.Frame{}, "AbsPath", "Filename"),
 	)
 }