diff --git a/src/cc65/asmcode.c b/src/cc65/asmcode.c
index 9f61dc212..f81d3ebb8 100644
--- a/src/cc65/asmcode.c
+++ b/src/cc65/asmcode.c
@@ -83,9 +83,9 @@ void MoveCode (const CodeMark* Start, const CodeMark* End, const CodeMark* Targe
 
 int CodeRangeIsEmpty (const CodeMark* Start, const CodeMark* End)
 /* Return true if the given code range is empty (no code between Start and End) */
-{   
+{
     int Empty;
-    PRECONDITION (Start->Pos >= End->Pos);
+    PRECONDITION (Start->Pos <= End->Pos);
     Empty = (Start->Pos == End->Pos);
     if (Empty) {
         /* Safety */