diff --git a/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp b/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp
index fbfd372ff9d..c0699018e68 100644
--- a/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp
+++ b/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp
@@ -113,11 +113,11 @@ FLATTEN SignedBigInteger SignedBigInteger::minus(const SignedBigInteger& other)
     // -x - -y = y - x
     if (m_unsigned_data < other.m_unsigned_data) {
         // The result will be positive.
-        return SignedBigInteger { m_unsigned_data.minus(other.m_unsigned_data) };
+        return SignedBigInteger { other.m_unsigned_data.minus(m_unsigned_data), true };
     }
     // The result will be either zero, or negative.
     // y - x = - (x - y)
-    return { other.m_unsigned_data.minus(m_unsigned_data), true };
+    return SignedBigInteger { m_unsigned_data.minus(other.m_unsigned_data) };
 }
 
 FLATTEN SignedBigInteger SignedBigInteger::plus(const UnsignedBigInteger& other) const
diff --git a/Libraries/LibJS/Tests/builtins/BigInt/bigint-minus.js b/Libraries/LibJS/Tests/builtins/BigInt/bigint-minus.js
new file mode 100644
index 00000000000..5d88f85ce23
--- /dev/null
+++ b/Libraries/LibJS/Tests/builtins/BigInt/bigint-minus.js
@@ -0,0 +1,8 @@
+describe("minus behavior", () => {
+    test("the basics", () => {
+        expect(3n - 4n).toBe(-1n);
+        expect(3n - -4n).toBe(7n);
+        expect(-3n - -4n).toBe(-1n);
+        expect(-3n - 4n).toBe(-7n);
+    });
+});