diff --git a/crates/io/src/abr_map.rs b/crates/io/src/abr_map.rs
index e7fd290f..c21800f1 100644
--- a/crates/io/src/abr_map.rs
+++ b/crates/io/src/abr_map.rs
@@ -429,7 +429,12 @@ impl Mapper<'_> {
             }
             dual.mode = mask_mode(enum_value(db, "BlnM")).unwrap_or(MaskMode::Multiply);
             dual.flip = boolean(db, "Flip").unwrap_or(false);
-            if let Some(v) = pct(db, "Spcn") {
+            // The dual tip's own spacing (`Brsh › Spcn`) is what Photoshop's Dual Brush panel
+            // shows. The `Spcn` beside it on the `dualBrush` object reads 100 % in Photoshop CC
+            // presets whatever the panel says (#4809), so it only stands in for a tip without one.
+            if obj(db, "Brsh").and_then(|t| pct(t, "Spcn")).is_none()
+                && let Some(v) = pct(db, "Spcn")
+            {
                 dual.spacing = v.clamp(0.01, 10.0);
             }
             dual.scatter = self.dynamic(obj(db, "scatterDynamics")).jitter;
diff --git a/crates/io/src/abr_map/tests.rs b/crates/io/src/abr_map/tests.rs
index a9719345..8bea7638 100644
--- a/crates/io/src/abr_map/tests.rs
+++ b/crates/io/src/abr_map/tests.rs
@@ -399,3 +399,32 @@ fn low_depth_height_texture_brush_paints() {
         assert_eq!(covered, 36, "{mode}: the stroke painted {covered} of 36 pixels");
     }
 }
+
+/// #4809: Photoshop CC presets store the dual tip's spacing in `dualBrush › Brsh › Spcn` and a
+/// `Spcn` of 100 % on the `dualBrush` object beside it; the tip's value is the panel's. A tip
+/// without one still takes the outer value.
+#[test]
+fn dual_brush_spacing_comes_from_its_tip() {
+    let dual = |tip: Descriptor| {
+        Descriptor::new("brushPreset")
+            .with("Nm  ", t("SPACING 10%"))
+            .with("Brsh", Value::Descriptor(Descriptor::new("computedBrush").with("Dmtr", u(b"#Pxl", 30.0))))
+            .with(
+                "dualBrush",
+                Value::Descriptor(
+                    Descriptor::new("dualBrush")
+                        .with("useDualBrush", Value::Boolean(true))
+                        .with("Brsh", Value::Descriptor(tip))
+                        .with("BlnM", en("BlnM", "Ovrl"))
+                        .with("Spcn", prc(100.0)),
+                ),
+            )
+    };
+    let spacing = |preset: Descriptor| {
+        let bytes = write_v6(2, &[], &[], &[preset], false).unwrap();
+        read_abr(&bytes, "Test").unwrap().presets[0].brush.dual_brush.spacing
+    };
+    let tip = Descriptor::new("computedBrush").with("Dmtr", u(b"#Pxl", 40.0));
+    assert!((spacing(dual(tip.clone().with("Spcn", prc(10.0)))) - 0.10).abs() < 1e-6, "the tip's 10 %, not the outer 100 %");
+    assert!((spacing(dual(tip)) - 1.0).abs() < 1e-6, "no tip spacing: the outer value");
+}