diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 2c00a0449..18f6a974f 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -7884,11 +7884,13 @@ void Tokenizer::simplifyEnum()
                     }
 
                     if (simplify) {
-                        if (ev->value)
+                        if (ev->value) {
                             tok2->str(ev->value->str());
-                        else {
+                            if (hasClass)
+                                tok2->deleteNext(2);
+                        } else {
                             tok2 = tok2->previous();
-                            tok2->deleteNext();
+                            tok2->deleteNext(hasClass ? 3 : 1);
                             bool hasOp = false;
                             int indentlevel = 0;
                             for (const Token *enumtok = ev->start; enumtok != ev->end; enumtok = enumtok->next()) {
@@ -7907,13 +7909,10 @@ void Tokenizer::simplifyEnum()
                                 tok2 = copyTokens(startPar, ev->start, ev->end);
                                 tok2->insertToken(")");
                                 Token::createMutualLinks(startPar, tok2->next());
+                                tok2 = tok2->next();
                             }
                         }
 
-                        if (hasClass) {
-                            tok2->deleteNext(2);
-                        }
-
                         simplify = false;
                     }
                 }
diff --git a/test/testsimplifytokens.cpp b/test/testsimplifytokens.cpp
index 144bc206d..4f1ec27aa 100644
--- a/test/testsimplifytokens.cpp
+++ b/test/testsimplifytokens.cpp
@@ -375,6 +375,7 @@ private:
         TEST_CASE(enum38); // ticket #4463 (when throwing enum id, don't warn about shadow variable)
         TEST_CASE(enum39); // ticket #5145 (fp variable hides enum)
         TEST_CASE(enum40);
+        TEST_CASE(enum41); // ticket #5212 (valgrind errors during enum simplification)
         TEST_CASE(enumscope1); // ticket #3949
         TEST_CASE(duplicateDefinition); // ticket #3565
 
@@ -7500,6 +7501,18 @@ private:
         ASSERT_EQUALS("void f ( ) { x = y + ( 3 ) ; }", checkSimplifyEnum(code));
     }
 
+    void enum41() { // ticket #5212 (valgrind errors during enum simplification)
+        const char code[] = "namespace Foo {\n"
+                            "  enum BarConfig {\n"
+                            "    eBitOne = (1 << 0),\n"
+                            "    eBitTwo = (1 << 1),\n"
+                            "    eAll        = eBitOne|eBitTwo\n"
+                            "  };\n"
+                            "}\n"
+                            "int x = Foo::eAll;";
+        ASSERT_EQUALS("int x ; x = ( 1 ) | 2 ;", checkSimplifyEnum(code));
+    }
+
     void enumscope1() { // #3949 - don't simplify enum from one function in another function
         const char code[] = "void foo() { enum { A = 0, B = 1 }; }\n"
                             "void bar() { int a = A; }";