diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 451defe7c..a364e7d35 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -7359,7 +7359,7 @@ void Tokenizer::simplifyReference()
                         }
                     }
 
-                    tok2->deleteNext(6+(tok->strAt(6)==")" ? 1 : 0));
+                    tok2->deleteNext(6+(tok2->strAt(6)==")" ? 1 : 0));
                 }
             }
             tok = end;
diff --git a/test/testsimplifytokens.cpp b/test/testsimplifytokens.cpp
index 5eb890fba..cf4b44465 100644
--- a/test/testsimplifytokens.cpp
+++ b/test/testsimplifytokens.cpp
@@ -3352,6 +3352,9 @@ private:
                       tok("void f() { int a; int &b(a); b++; }"));
         ASSERT_EQUALS("void f ( ) { int a ; a ++ ; }",
                       tok("void f() { int a; int &b = a; b++; }"));
+
+        ASSERT_EQUALS("void test ( ) { c . f ( 7 ) ; }",
+                      tok("void test() { c.f(7); T3 &t3 = c; }")); // #6133
     }
 
     void simplifyRealloc() {