diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 5816760d4..7a218f668 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -5441,7 +5441,7 @@ Token *Tokenizer::simplifyAddBracesToCommand(Token *tok)
                     syntaxError(tok);
             }
         }
-    } else if (tok->str()=="if") {
+    } else if (tok->str()=="if" && !Token::simpleMatch(tok->tokAt(-2), "operator \"\"")) {
         tokEnd=simplifyAddBracesPair(tok,true);
         if (!tokEnd)
             return nullptr;
@@ -9118,8 +9118,10 @@ void Tokenizer::findGarbageCode() const
 
     for (const Token *tok = tokens(); tok; tok = tok->next()) {
         if (Token::Match(tok, "if|while|for|switch")) { // if|while|for|switch (EXPR) { ... }
-            if (tok->previous() && !Token::Match(tok->previous(), "%name%|:|;|{|}|(|)|,"))
-                syntaxError(tok);
+            if (tok->previous() && !Token::Match(tok->previous(), "%name%|:|;|{|}|(|)|,")) {
+                if (!Token::simpleMatch(tok->tokAt(-2), "operator \"\" if"))
+                    syntaxError(tok);
+            }
             if (Token::Match(tok->previous(), "[(,]"))
                 continue;
             if (!Token::Match(tok->next(), "( !!)"))
@@ -9150,8 +9152,10 @@ void Tokenizer::findGarbageCode() const
         const Token *prev = tok;
         while (prev && prev->isName())
             prev = prev->previous();
-        if (Token::Match(prev, "%op%|%num%|%str%|%char%"))
-            syntaxError(tok, prev == tok->previous() ? (prev->str() + " " + tok->str()) : (prev->str() + " .. " + tok->str()));
+        if (Token::Match(prev, "%op%|%num%|%str%|%char%")) {
+            if (!Token::simpleMatch(tok->tokAt(-2), "operator \"\" if"))
+                syntaxError(tok, prev == tok->previous() ? (prev->str() + " " + tok->str()) : (prev->str() + " .. " + tok->str()));
+        }
     }
 
     // case keyword must be inside switch
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index 45f1e9779..d820f615d 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -399,6 +399,7 @@ private:
         TEST_CASE(simplifyOperatorName11); // #8889
         TEST_CASE(simplifyOperatorName12); // #9110
         TEST_CASE(simplifyOperatorName13); // user defined literal
+        TEST_CASE(simplifyOperatorName14); // std::complex operator "" if
 
         TEST_CASE(simplifyNullArray);
 
@@ -6357,11 +6358,24 @@ private:
     }
 
     void simplifyOperatorName13() { // user defined literal
-        const char code[] = "unsigned long operator""_numch(const char *ch, unsigned long size);";
-        ASSERT_EQUALS("unsigned long operator""_numch ( const char * ch , unsigned long size ) ;",
+        const char code[] = "unsigned long operator\"\"_numch(const char *ch, unsigned long size);";
+        ASSERT_EQUALS("unsigned long operator\"\"_numch ( const char * ch , unsigned long size ) ;",
                       tokenizeAndStringify(code));
     }
 
+    void simplifyOperatorName14() { // std::complex operator "" if
+        {
+            const char code[] = "constexpr std::complex<float> operator\"\"if(long double __num);";
+            ASSERT_EQUALS("const std :: complex < float > operator\"\"if ( long double __num ) ;",
+                          tokenizeAndStringify(code));
+        }
+        {
+            const char code[] = "constexpr std::complex<float> operator\"\"if(long double __num) { }";
+            ASSERT_EQUALS("const std :: complex < float > operator\"\"if ( long double __num ) { }",
+                          tokenizeAndStringify(code));
+        }
+    }
+
     void simplifyNullArray() {
         ASSERT_EQUALS("* ( foo . bar [ 5 ] ) = x ;", tokenizeAndStringify("0[foo.bar[5]] = x;"));
     }