diff --git a/sourcexp_ida.py b/sourcexp_ida.py
index c8d7b66..8c2d4d6 100644
--- a/sourcexp_ida.py
+++ b/sourcexp_ida.py
@@ -524,6 +524,8 @@ def do_export(self, f):
     flow = FlowChart(func)
     for block in flow:
       block_ea = block.startEA
+      if block.endEA == 0 or block_ea == BADADDR:
+        continue
 
       # ...and each instruction on each basic block
       for ea in list(Heads(block.startEA, block.endEA)):