diff --git a/SConstruct b/SConstruct
index 28d3cb94f..b860bb58e 100644
--- a/SConstruct
+++ b/SConstruct
@@ -1411,7 +1411,7 @@ if not preconfigured:
             pthread = '-pthread'
         
         # Common debugging flags.
-        debug_flags  = '-g -DDEBUG -DMAPNIK_DEBUG'
+        debug_flags  = '-g -fno-omit-frame-pointer -DDEBUG -DMAPNIK_DEBUG'
         ndebug_flags = '-DNDEBUG'