diff --git a/lib/checkstl.cpp b/lib/checkstl.cpp
index 3509386ca..e6f61e3be 100644
--- a/lib/checkstl.cpp
+++ b/lib/checkstl.cpp
@@ -964,6 +964,13 @@ void CheckStl::missingComparison()
                         incrementToken = 0;
                     else if (tok3->str() == "break" || tok3->str() == "return")
                         incrementToken = 0;
+                    else if (Token::Match(tok3, "%varid% = %var% . insert ( ++| %varid% ++| ,", iteratorId))
+                    {
+                        // skip insertion..
+                        tok3 = tok3->tokAt(6)->link();
+                        if (!tok3)
+                            break;
+                    }
                 }
                 if (incrementToken)
                     missingComparisonError(incrementToken, tok2->tokAt(16));
diff --git a/test/teststl.cpp b/test/teststl.cpp
index 15b68fd36..af08ebd0d 100644
--- a/test/teststl.cpp
+++ b/test/teststl.cpp
@@ -102,6 +102,7 @@ private:
         TEST_CASE(missingInnerComparison3);     // no FP when there is iterator shadowing
         TEST_CASE(missingInnerComparison4);     // no FP when "break;" is used
         TEST_CASE(missingInnerComparison5);     // Ticket #2154 - FP
+        TEST_CASE(missingInnerComparison6);     // #2643 - 'it=foo.insert(++it,0);'
 
         // catch common problems when using the string::c_str() function
         TEST_CASE(cstr);
@@ -1250,6 +1251,16 @@ private:
         ASSERT_EQUALS("", errout.str());
     }
 
+    void missingInnerComparison6()
+    {
+        check("void f(std::string &s) {\n"
+              "    for(string::iterator it = s.begin(); it != s.end(); it++) {\n"
+              "        it = s.insert(++it, 0);\n"
+              "    }\n"
+              "}");
+        ASSERT_EQUALS("", errout.str());
+    }
+
     void cstr()
     {
         check("void f() {\n"