diff --git a/crates/typst-layout/src/inline/linebreak.rs b/crates/typst-layout/src/inline/linebreak.rs
index 26621cd7b..236d68921 100644
--- a/crates/typst-layout/src/inline/linebreak.rs
+++ b/crates/typst-layout/src/inline/linebreak.rs
@@ -543,7 +543,12 @@ fn raw_ratio(
 ) -> f64 {
     // Determine how much the line's spaces would need to be stretched
     // to make it the desired width.
-    let delta = available_width - line_width;
+    let mut delta = available_width - line_width;
+
+    // Avoid possible floating point errors in previous calculation.
+    if delta.approx_eq(Abs::zero()) {
+        delta = Abs::zero();
+    }
 
     // Determine how much stretch or shrink is natural.
     let adjustability = if delta >= Abs::zero() { stretchability } else { shrinkability };
diff --git a/tests/ref/issue-5360-unnecessary-hyphenation.png b/tests/ref/issue-5360-unnecessary-hyphenation.png
new file mode 100644
index 000000000..90a8180a5
Binary files /dev/null and b/tests/ref/issue-5360-unnecessary-hyphenation.png differ
diff --git a/tests/suite/layout/inline/justify.typ b/tests/suite/layout/inline/justify.typ
index 576f8519c..6e0317ac5 100644
--- a/tests/suite/layout/inline/justify.typ
+++ b/tests/suite/layout/inline/justify.typ
@@ -172,3 +172,8 @@ int main() {
 // Test that overflow does not lead to bad bounds in paragraph optimization.
 #set par(justify: true)
 #block(width: 0pt)[A B]
+
+--- issue-5360-unnecessary-hyphenation ---
+// Test whether `Formal` would be in one line.
+#set par(justify: true)
+#table(columns: 1, [Formal])