diff --git a/compiler/src/prog8/optimizer/BinExprSplitter.kt b/compiler/src/prog8/optimizer/BinExprSplitter.kt
index eef2cedcc..bbc733a75 100644
--- a/compiler/src/prog8/optimizer/BinExprSplitter.kt
+++ b/compiler/src/prog8/optimizer/BinExprSplitter.kt
@@ -53,12 +53,11 @@ X =      BinExpr                                    X   =   LeftExpr
 
 
  */
-            // TODO can be generelized a bit by allowing LEFT EXPR to be more complex
             if(binExpr.operator in augmentAssignmentOperators && isSimpleTarget(assignment.target, program.namespace)) {
                 if(assignment.target isSameAs binExpr.left || assignment.target isSameAs binExpr.right)
                     return noModifications
 
-                if(isSimpleExpression(binExpr.left) && isSimpleExpression(binExpr.right) && !assignment.isAugmentable) {
+                if(isSimpleExpression(binExpr.right) && !assignment.isAugmentable) {
                     val firstAssign = Assignment(assignment.target, binExpr.left, binExpr.left.position)
                     val targetExpr = assignment.target.toExpression()
                     val augExpr = BinaryExpression(targetExpr, binExpr.operator, binExpr.right, binExpr.right.position)
diff --git a/examples/mandelbrot.p8 b/examples/mandelbrot.p8
index 3a57abb01..50fd45f95 100644
--- a/examples/mandelbrot.p8
+++ b/examples/mandelbrot.p8
@@ -4,8 +4,6 @@
 
 ; Note: this program is compatible with C64 and CX16.
 
-; TODO this is 5 seconds slower than the previous compiled version.  Caused by BinExprSplitter change?
-
 main {
     const uword width = 30
     const uword height = 20