diff --git a/Make/makedefs b/Make/makedefs
index 59e2fe78a..ab412ab5d 100644
--- a/Make/makedefs
+++ b/Make/makedefs
@@ -345,7 +345,7 @@ ifeq ($(OS),MINGW)
   LINKARGS          = -W -Wall
   DYNAMICLIBRARYLIB =
 
-  OSG_LIBS          = -losgGLUT -losgDB -losgUtil -losg 
+  OSG_LIBS          = -losgGLUT -losgGA -losgDB -losgUtil -losg 
   GL_LIBS           = -lglu32 -lopengl32
   GLUT_LIB          = -lglut32 $(GL_LIBS)
   X_LIBS            = -lgdi32 -luser32