diff --git a/lib/compress.js b/lib/compress.js
index 8b1ec1cf..9891e4be 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -12901,43 +12901,44 @@ Compressor.prototype.compress = function(node) {
     AST_PropAccess.DEFMETHOD("flatten_object", function(key, compressor) {
         if (!compressor.option("properties")) return;
         if (key === "__proto__") return;
-        var expr = this.expression;
-        if (expr instanceof AST_Object) {
-            var props = expr.properties;
-            for (var i = props.length; --i >= 0;) {
-                var prop = props[i];
-                if (prop.key !== key) continue;
-                if (!all(props, can_hoist_property)) return;
-                if (!safe_to_flatten(prop.value, compressor)) return;
-                var scope, values = [];
-                for (var j = 0; j < props.length; j++) {
-                    var value = props[j].value;
-                    if (props[j] instanceof AST_ObjectMethod) {
-                        var arrow = !(value.uses_arguments || is_generator(value) || value.contains_this());
-                        if (arrow) {
-                            if (!scope) scope = compressor.find_parent(AST_Scope);
-                            var avoid = avoid_await_yield(scope);
-                            value.each_argname(function(argname) {
-                                if (avoid[argname.name]) arrow = false;
-                            });
-                        }
-                        var ctor;
-                        if (arrow) {
-                            ctor = is_async(value) ? AST_AsyncArrow : AST_Arrow;
-                        } else if (i === j && !(compressor.parent() instanceof AST_Call)) {
-                            return;
-                        } else {
-                            ctor = value.CTOR;
-                        }
-                        value = make_node(ctor, value, value);
+        var self = this;
+        var expr = self.expression;
+        if (!(expr instanceof AST_Object)) return;
+        var props = expr.properties;
+        for (var i = props.length; --i >= 0;) {
+            var prop = props[i];
+            if (prop.key !== key) continue;
+            if (!all(props, can_hoist_property)) return;
+            if (!safe_to_flatten(prop.value, compressor)) return;
+            var call, scope, values = [];
+            for (var j = 0; j < props.length; j++) {
+                var value = props[j].value;
+                if (props[j] instanceof AST_ObjectMethod) {
+                    var arrow = !(value.uses_arguments || is_generator(value) || value.contains_this());
+                    if (arrow) {
+                        if (!scope) scope = compressor.find_parent(AST_Scope);
+                        var avoid = avoid_await_yield(scope);
+                        value.each_argname(function(argname) {
+                            if (avoid[argname.name]) arrow = false;
+                        });
                     }
-                    values.push(value);
+                    var ctor;
+                    if (arrow) {
+                        ctor = is_async(value) ? AST_AsyncArrow : AST_Arrow;
+                    } else if (i != j
+                        || (call = compressor.parent()) instanceof AST_Call && call.expression === self) {
+                        ctor = value.CTOR;
+                    } else {
+                        return;
+                    }
+                    value = make_node(ctor, value, value);
                 }
-                return make_node(AST_Sub, this, {
-                    expression: make_node(AST_Array, expr, { elements: values }),
-                    property: make_node(AST_Number, this, { value: i }),
-                });
+                values.push(value);
             }
+            return make_node(AST_Sub, self, {
+                expression: make_node(AST_Array, expr, { elements: values }),
+                property: make_node(AST_Number, self, { value: i }),
+            });
         }
     });
 
diff --git a/test/compress/classes.js b/test/compress/classes.js
index 2713a248..441d8bf0 100644
--- a/test/compress/classes.js
+++ b/test/compress/classes.js
@@ -2502,3 +2502,39 @@ issue_5352: {
     expect_stdout: "PASS"
     node_version: ">=12"
 }
+
+issue_5387: {
+    options = {
+        properties: true,
+    }
+    input: {
+        "use strict";
+        (function(a) {
+            try {
+                class A extends a {}
+            } catch (e) {
+                console.log("PASS");
+            }
+        })({
+            f() {
+                return this;
+            }
+        }.f);
+    }
+    expect: {
+        "use strict";
+        (function(a) {
+            try {
+                class A extends a {}
+            } catch (e) {
+                console.log("PASS");
+            }
+        })({
+            f() {
+                return this;
+            }
+        }.f);
+    }
+    expect_stdout: "PASS"
+    node_version: ">=4"
+}