diff --git a/Make/makedefs b/Make/makedefs
index c2b26a4b4..84a298f63 100644
--- a/Make/makedefs
+++ b/Make/makedefs
@@ -212,7 +212,7 @@ endif
   INC               += 
   DEF               += -W -Wall
   OPTF              = -O2 
-  DBGF              = -g -DOSG_COMPILE_UNIT_TESTS 
+  DBGF              = -g -gstabs+ -DOSG_COMPILE_UNIT_TESTS 
   SHARED            = -shared
   ARCHARGS          = 
   LINKARGS          = -L/usr/X11R6/lib