diff --git a/cmd/dive/cli/internal/command/export/testdata/snapshots/export_test.snap b/cmd/dive/cli/internal/command/export/testdata/snapshots/export_test.snap
index 454c34a..25d6b10 100755
--- a/cmd/dive/cli/internal/command/export/testdata/snapshots/export_test.snap
+++ b/cmd/dive/cli/internal/command/export/testdata/snapshots/export_test.snap
@@ -20,7 +20,7 @@
     "sizeBytes": 6405
    }
   ],
-  "inefficientBytes": 32025,
+  "inefficientBytes": 19215,
   "sizeBytes": 1220598
  },
  "layer": [
diff --git a/cmd/dive/cli/internal/ui/v1/view/image_details.go b/cmd/dive/cli/internal/ui/v1/view/image_details.go
index a119ba7..ddcbaa5 100644
--- a/cmd/dive/cli/internal/ui/v1/view/image_details.go
+++ b/cmd/dive/cli/internal/ui/v1/view/image_details.go
@@ -86,7 +86,7 @@ func (v *ImageDetails) Render() error {
 	var wastedSpace int64
 	for idx := 0; idx < len(v.inefficiencies); idx++ {
 		data := v.inefficiencies[len(v.inefficiencies)-1-idx]
-		wastedSpace += data.CumulativeSize
+		wastedSpace += data.WastedSize()
 
 		inefficiencyReport += fmt.Sprintf(analysisTemplate, strconv.Itoa(len(data.Nodes)), humanize.Bytes(uint64(data.CumulativeSize)), data.Path)
 	}
diff --git a/dive/filetree/efficiency.go b/dive/filetree/efficiency.go
index 02035a6..8e80252 100644
--- a/dive/filetree/efficiency.go
+++ b/dive/filetree/efficiency.go
@@ -14,6 +14,17 @@ type EfficiencyData struct {
 	minDiscoveredSize int64
 }
 
+// WastedSize is the estimated reclaimable size for this path.
+// Exactly one discovered copy must remain, so only bytes beyond the smallest
+// discovered copy count as removable.
+func (data *EfficiencyData) WastedSize() int64 {
+	wasted := data.CumulativeSize - data.minDiscoveredSize
+	if wasted < 0 {
+		return 0
+	}
+	return wasted
+}
+
 // EfficiencySlice represents an ordered set of EfficiencyData data structures.
 type EfficiencySlice []*EfficiencyData
 
diff --git a/dive/image/analysis.go b/dive/image/analysis.go
index d2b0f04..eb36824 100644
--- a/dive/image/analysis.go
+++ b/dive/image/analysis.go
@@ -30,7 +30,7 @@ func Analyze(ctx context.Context, img *Image) (*Analysis, error) {
 
 	var wastedBytes uint64
 	for _, file := range inefficiencies {
-		wastedBytes += uint64(file.CumulativeSize)
+		wastedBytes += uint64(file.WastedSize())
 	}
 
 	return &Analysis{
diff --git a/dive/image/docker/image_archive_analysis_test.go b/dive/image/docker/image_archive_analysis_test.go
index afc3825..0652b8e 100644
--- a/dive/image/docker/image_archive_analysis_test.go
+++ b/dive/image/docker/image_archive_analysis_test.go
@@ -14,7 +14,7 @@ func Test_Analysis(t *testing.T) {
 		wastedPercent float64
 		path          string
 	}{
-		"docker-image": {0.9844212134184309, 1220598, 66237, 32025, 0.4834911001404049, "../../../.data/test-docker-image.tar"},
+		"docker-image": {0.9844212134184309, 1220598, 66237, 19215, 0.29009466008424295, "../../../.data/test-docker-image.tar"},
 	}
 
 	for name, test := range table {