diff --git a/src/osgPlugins/Inventor/GNUmakefile b/src/osgPlugins/Inventor/GNUmakefile
index 7fe6098a8..86a29eeea 100644
--- a/src/osgPlugins/Inventor/GNUmakefile
+++ b/src/osgPlugins/Inventor/GNUmakefile
@@ -8,7 +8,7 @@ CXXFILES =\
     ShuttleCallback.cpp \
     GroupSoLOD.cpp
     
-ifeq ($(USE_COIN),1)
+ifeq ($(COIN_INSTALLED),yes)
     INVENTOR_LIB = -lCoin
 else
     INVENTOR_LIB = -lInventor
diff --git a/src/osgPlugins/Inventor/ReaderWriterIV.cpp b/src/osgPlugins/Inventor/ReaderWriterIV.cpp
index 8a6382914..f80520702 100644
--- a/src/osgPlugins/Inventor/ReaderWriterIV.cpp
+++ b/src/osgPlugins/Inventor/ReaderWriterIV.cpp
@@ -2,6 +2,7 @@
 
 // OSG headers
 #include <osg/Notify>
+#include <osgDB/FileUtils>
 #include <osgDB/FileNameUtils>
 
 // Inventor headers