diff --git a/src/tokenize.cpp b/src/tokenize.cpp
index f12939401..29ced3702 100644
--- a/src/tokenize.cpp
+++ b/src/tokenize.cpp
@@ -3022,7 +3022,7 @@ bool Tokenizer::simplifyKnownVariables()
                     }
 
                     // Stop if something like 'while (--var)' is found
-                    if (tok3->str() == "while")
+                    if (tok3->str() == "while" || tok3->str() == "do")
                     {
                         const Token *endpar = tok3->next()->link();
                         bool bailout = false;
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index 58160e3ed..672875269 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -80,6 +80,7 @@ private:
         TEST_CASE(simplifyKnownVariables11);
         TEST_CASE(simplifyKnownVariables12);
         TEST_CASE(simplifyKnownVariables13);
+        TEST_CASE(simplifyKnownVariables14);
 
         TEST_CASE(match1);
 
@@ -802,6 +803,13 @@ private:
             simplifyKnownVariables(code));
     }
 
+    void simplifyKnownVariables14()
+    {
+        // ticket #753
+        const char code[] = "void f ( ) { int n ; n = 1 ; do { ++ n ; } while ( n < 10 ) ; }";
+        ASSERT_EQUALS(code, simplifyKnownVariables(code));
+    }
+
 
     void match1()
     {