diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 05a82a3dd..ba6e9b1f0 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -2679,6 +2679,12 @@ void Tokenizer::setVarId()
         if (tok == list.front() || Token::Match(tok, "[;{}]") ||
             (Token::Match(tok,"[(,]") && (!executableScope.top() || Token::simpleMatch(tok->link(), ") {"))) ||
             (tok->isName() && tok->str().at(tok->str().length()-1U) == ':')) {
+
+            // No variable declarations in sizeof
+            if (Token::Match(tok->previous(), "sizeof (")) {
+                continue;
+            }
+
             // locate the variable name..
             const Token *tok2 = (tok->isName()) ? tok : tok->next();
 
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index fd9df57c7..e0d57fc2e 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -223,6 +223,7 @@ private:
         TEST_CASE(varidStl);
         TEST_CASE(varid_delete);
         TEST_CASE(varid_functions);
+        TEST_CASE(varid_sizeof);
         TEST_CASE(varid_reference_to_containers);
         TEST_CASE(varid_in_class1);
         TEST_CASE(varid_in_class2);
@@ -3437,6 +3438,13 @@ private:
 
     }
 
+    void varid_sizeof() {
+        const char code[] = "x = sizeof(a*b);";
+        const char expected[] = "\n\n##file 0\n"
+                                "1: x = sizeof ( a * b ) ;\n";
+        ASSERT_EQUALS(expected, tokenizeDebugListing(code,false,"test.c"));
+    }
+
     void varid_reference_to_containers() {
         const std::string actual = tokenizeDebugListing(
                                        "void f()\n"