diff -Naur dia-0.96.1.orig/lib/plug-ins.c dia-0.96.1/lib/plug-ins.c
--- dia-0.96.1.orig/lib/plug-ins.c	2007-01-07 03:58:26.000000000 +0530
+++ dia-0.96.1/lib/plug-ins.c	2009-01-03 20:57:33.000000000 +0530
@@ -52,9 +52,9 @@
 #  define USING_LIBTOOL 0
 #else
 /* this one should work on any platform where libtool is used to compile dia */
-#  define PLUG_IN_EXT ".la"
+#  define PLUG_IN_EXT ".so"
 #  define PLUG_IN_EXT_LEN 3
-#  define USING_LIBTOOL 1
+#  define USING_LIBTOOL 0
 #endif
 
 struct _PluginInfo {