diff --git a/examples/slideshow3D/GNUmakefile b/examples/slideshow3D/GNUmakefile
index 7ac378370..4a3a117b7 100644
--- a/examples/slideshow3D/GNUmakefile
+++ b/examples/slideshow3D/GNUmakefile
@@ -8,7 +8,6 @@ CXXFILES =\
         ReaderWriterXML.cpp\
 	slideshow3D.cpp\
 
-CXXFLAGS += -I/usr/include/libxml2
 LIBS     += -lxml2 -losgProducer -lProducer -losgText -losgGA -losgDB -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS) 
 
 INSTFILES = \
@@ -17,7 +16,7 @@ INSTFILES = \
 
 EXEC = slideshow3D
 
-INC += $(PRODUCER_INCLUDE_DIR) -I/usr/X11R6/include 
+INC += $(PRODUCER_INCLUDE_DIR) -I/usr/X11R6/include -I/usr/include/libxml2
 LDFLAGS  += $(PRODUCER_LIB_DIR)
 
 include $(TOPDIR)/Make/makerules 
diff --git a/examples/slideshow3D/GNUmakefile.inst b/examples/slideshow3D/GNUmakefile.inst
index 0616019fe..3c4eac5ec 100644
--- a/examples/slideshow3D/GNUmakefile.inst
+++ b/examples/slideshow3D/GNUmakefile.inst
@@ -8,12 +8,11 @@ CXXFILES =\
         ReaderWriterXML.cpp\
 	slideshow3D.cpp\
 
-CXXFLAGS += -I/usr/include/libxml2
 LIBS     += -lxml2 -losgProducer -lProducer -losgDB -losgText -losgUtil -losg $(GL_LIBS) $(X_LIBS) $(OTHER_LIBS) 
 
 EXEC = slideshow3D
 
-INC += $(PRODUCER_INCLUDE_DIR) -I/usr/X11R6/include
+INC += $(PRODUCER_INCLUDE_DIR) -I/usr/X11R6/include -I/usr/include/libxml2
 LDFLAGS  += $(PRODUCER_LIB_DIR)
 
 include $(TOPDIR)/Make/makerules