diff --git a/src/compiler/binder.ts b/src/compiler/binder.ts
index fcd9b854c49..7cb321a95fa 100644
--- a/src/compiler/binder.ts
+++ b/src/compiler/binder.ts
@@ -2608,7 +2608,7 @@ namespace ts {
                 return true;
             }
             const node = symbol.valueDeclaration;
-            if (isCallExpression(node)) {
+            if (node && isCallExpression(node)) {
                 return !!getAssignedExpandoInitializer(node);
             }
             let init = !node ? undefined :
diff --git a/tests/baselines/reference/propertyAssignmentOnUnresolvedImportedSymbol.errors.txt b/tests/baselines/reference/propertyAssignmentOnUnresolvedImportedSymbol.errors.txt
new file mode 100644
index 00000000000..447285b8328
--- /dev/null
+++ b/tests/baselines/reference/propertyAssignmentOnUnresolvedImportedSymbol.errors.txt
@@ -0,0 +1,11 @@
+tests/cases/conformance/salsa/bug28576.js(1,15): error TS2307: Cannot find module 'arglebaz'.
+
+
+==== tests/cases/conformance/salsa/bug28576.js (1 errors) ====
+    import x from 'arglebaz'
+                  ~~~~~~~~~~
+!!! error TS2307: Cannot find module 'arglebaz'.
+    {
+        x.bar = 1
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/propertyAssignmentOnUnresolvedImportedSymbol.symbols b/tests/baselines/reference/propertyAssignmentOnUnresolvedImportedSymbol.symbols
new file mode 100644
index 00000000000..3a190cbaa86
--- /dev/null
+++ b/tests/baselines/reference/propertyAssignmentOnUnresolvedImportedSymbol.symbols
@@ -0,0 +1,8 @@
+=== tests/cases/conformance/salsa/bug28576.js ===
+import x from 'arglebaz'
+>x : Symbol(x, Decl(bug28576.js, 0, 6))
+{
+    x.bar = 1
+>x : Symbol(x, Decl(bug28576.js, 0, 6))
+}
+
diff --git a/tests/baselines/reference/propertyAssignmentOnUnresolvedImportedSymbol.types b/tests/baselines/reference/propertyAssignmentOnUnresolvedImportedSymbol.types
new file mode 100644
index 00000000000..5ff245f8475
--- /dev/null
+++ b/tests/baselines/reference/propertyAssignmentOnUnresolvedImportedSymbol.types
@@ -0,0 +1,12 @@
+=== tests/cases/conformance/salsa/bug28576.js ===
+import x from 'arglebaz'
+>x : any
+{
+    x.bar = 1
+>x.bar = 1 : 1
+>x.bar : any
+>x : any
+>bar : any
+>1 : 1
+}
+
diff --git a/tests/cases/conformance/salsa/propertyAssignmentOnUnresolvedImportedSymbol.ts b/tests/cases/conformance/salsa/propertyAssignmentOnUnresolvedImportedSymbol.ts
new file mode 100644
index 00000000000..a879367e06f
--- /dev/null
+++ b/tests/cases/conformance/salsa/propertyAssignmentOnUnresolvedImportedSymbol.ts
@@ -0,0 +1,8 @@
+// @allowJs: true
+// @checkJs: true
+// @noEmit: true
+// @Filename: bug28576.js
+import x from 'arglebaz'
+{
+    x.bar = 1
+}