diff --git a/libs/pbd/wscript b/libs/pbd/wscript
index b18552af36..77a7d555d4 100644
--- a/libs/pbd/wscript
+++ b/libs/pbd/wscript
@@ -150,7 +150,7 @@ def build(bld):
         obj.defines += [ 'USE_X86_64_ASM' ]
     if bld.env['build_target'] == 'mingw':
         obj.source += [ 'windows_special_dirs.cc' ]
-        obj.linkflags += ['-lole']
+        obj.linkflags = ['-lole']
 
     if bld.env['BUILD_TESTS'] and bld.is_defined('HAVE_CPPUNIT'):
         # Unit tests