diff --git a/compiler/src/dotty/tools/dotc/typer/Nullables.scala b/compiler/src/dotty/tools/dotc/typer/Nullables.scala
index e7ef771a414a..470e9d241933 100644
--- a/compiler/src/dotty/tools/dotc/typer/Nullables.scala
+++ b/compiler/src/dotty/tools/dotc/typer/Nullables.scala
@@ -456,7 +456,7 @@ object Nullables:
                 else candidates -= name
               case None =>
             traverseChildren(tree)
-          case _: (If | WhileDo | Typed) =>
+          case _: (If | WhileDo | Typed | Match | CaseDef | untpd.ParsedTry) =>
             traverseChildren(tree)      // assignments to candidate variables are OK here ...
           case _ =>
             reachable = Set.empty       // ... but not here
diff --git a/tests/explicit-nulls/pos/match-flow-typing.scala b/tests/explicit-nulls/pos/match-flow-typing.scala
new file mode 100644
index 000000000000..200af36a73e0
--- /dev/null
+++ b/tests/explicit-nulls/pos/match-flow-typing.scala
@@ -0,0 +1,21 @@
+def m(): String = {
+  var x: String|Null = "foo"
+  1 match {
+    case 1 => x = x
+  }
+  if(x == null) "foo"
+  else x
+}
+
+def m2(): String = {
+  var x: String|Null = "foo"
+  try {
+    x = x
+  } catch {
+    case e => x = x
+  } finally {
+    x = x
+  }
+  if(x == null) "foo"
+  else x
+}