diff --git a/lib/valueflow.cpp b/lib/valueflow.cpp
index 1b3451b36..148d02fc2 100644
--- a/lib/valueflow.cpp
+++ b/lib/valueflow.cpp
@@ -2034,7 +2034,7 @@ struct ValueFlowAnalyzer : Analyzer {
         }
 
         // increment/decrement
-        if (Token::Match(tok->previous(), "++|-- %name%") || Token::Match(tok, "%name% ++|--")) {
+        if (Token::Match(tok->astParent(), "++|--")) {
             return Action::Read | Action::Write | Action::Incremental;
         }
         return Action::None;
diff --git a/test/testbufferoverrun.cpp b/test/testbufferoverrun.cpp
index a574f4718..af07000ec 100644
--- a/test/testbufferoverrun.cpp
+++ b/test/testbufferoverrun.cpp
@@ -133,6 +133,7 @@ private:
         TEST_CASE(array_index_53); // #4750
         TEST_CASE(array_index_54); // #10268
         TEST_CASE(array_index_55); // #10254
+        TEST_CASE(array_index_56); // #10284
         TEST_CASE(array_index_57); // #10023
         TEST_CASE(array_index_multidim);
         TEST_CASE(array_index_switch_in_for);
@@ -1594,6 +1595,18 @@ private:
         ASSERT_EQUALS("", errout.str());
     }
 
+    void array_index_56() {
+        check("struct s {\n"
+              "    int array[1];\n"
+              "    int index;\n"
+              "};\n"
+              "void f(struct s foo) {\n"
+              "    foo.array[foo.index++] = 1;\n"
+              "    if (foo.index == 1) {}\n"
+              "}\n");
+        ASSERT_EQUALS("", errout.str());
+    }
+
     void array_index_57() {
         check("void f(std::vector<int>& v) {\n"
               "    int a[3] = { 1, 2, 3 };\n"