diff --git a/src/osgPlugins/pnm/GNUmakefile b/src/osgPlugins/pnm/GNUmakefile
index 376dd6ac7..4f785739e 100644
--- a/src/osgPlugins/pnm/GNUmakefile
+++ b/src/osgPlugins/pnm/GNUmakefile
@@ -6,7 +6,7 @@ CXXFILES =\
 
 LIBS  += $(OSG_LIBS) $(OTHER_LIBS)
 
-TARGET_BASENAME = png
+TARGET_BASENAME = pnm
 include $(TOPDIR)/Make/cygwin_plugin_def
 PLUGIN = $(PLUGIN_PREFIX)$(TARGET_BASENAME).$(PLUGIN_EXT)