diff --git a/lib/checkclass.cpp b/lib/checkclass.cpp
index d917ed8ce..0672ad15b 100644
--- a/lib/checkclass.cpp
+++ b/lib/checkclass.cpp
@@ -1546,7 +1546,17 @@ bool CheckClass::checkConstFunc(const Scope *scope, const Token *tok)
         // increment/decrement (member variable?)..
         else if (Token::Match(tok1, "++|--"))
         {
-            isconst = false;
+            if (Token::Match(tok1->previous(), "%var%") &&
+                tok1->previous()->str() != "return")
+            {
+                if (isMemberVar(scope, tok1->previous()))
+                    isconst = false;
+            }
+            else if (Token::Match(tok1->next(), "%var%"))
+            {
+                if (isMemberVar(scope, tok1->next()))
+                    isconst = false;
+            }
             break;
         }
 
diff --git a/test/testclass.cpp b/test/testclass.cpp
index 2524e6b9f..f27d2a7a0 100644
--- a/test/testclass.cpp
+++ b/test/testclass.cpp
@@ -166,6 +166,7 @@ private:
         TEST_CASE(const43); // ticket #2377
         TEST_CASE(const44); // ticket #2595
         TEST_CASE(const45); // ticket #2664
+        TEST_CASE(const46); // ticket #2636
         TEST_CASE(assigningPointerToPointerIsNotAConstOperation);
         TEST_CASE(assigningArrayElementIsNotAConstOperation);
         TEST_CASE(constoperator1);  // operator< can often be const
@@ -5210,6 +5211,23 @@ private:
         ASSERT_EQUALS("[test.cpp:8]: (information) Technically the member function 'tools::WorkspaceControl::toGrid' can be const.\n", errout.str());
     }
 
+    void const46() // ticket 2663
+    {
+        checkConst("class Altren {\n"
+                   "public:\n"
+                   "    int fun1() {\n"
+                   "        int a;\n"
+                   "        a++;\n"
+                   "    }\n"
+                   "    int fun2() {\n"
+                   "        b++;\n"
+                   "    }\n"
+                   "}\n");
+
+        ASSERT_EQUALS("[test.cpp:3]: (information) Technically the member function 'Altren::fun1' can be const.\n"
+                      "[test.cpp:7]: (information) Technically the member function 'Altren::fun2' can be const.\n", errout.str());
+    }
+
     void assigningPointerToPointerIsNotAConstOperation()
     {
         checkConst("struct s\n"