diff --git a/src/osgPlugins/jpeg/ReaderWriterJPEG.cpp b/src/osgPlugins/jpeg/ReaderWriterJPEG.cpp
index 9f7f4c389..115203322 100644
--- a/src/osgPlugins/jpeg/ReaderWriterJPEG.cpp
+++ b/src/osgPlugins/jpeg/ReaderWriterJPEG.cpp
@@ -70,12 +70,14 @@ namespace osgDBJPEG
 
 static int jpegerror = ERR_NO_ERROR;
 
-/* Some versions of jmorecfg.h define boolean, some don't...
-   Those that do also define HAVE_BOOLEAN, so we can guard using that. */
-#ifndef HAVE_BOOLEAN
-  typedef int boolean;
-  #define FALSE 0
-  #define TRUE 1
+#if JPEG_LIB_VERSION < 90
+    /* Some versions of jmorecfg.h define boolean, some don't...
+    Those that do also define HAVE_BOOLEAN, so we can guard using that. */
+    #ifndef HAVE_BOOLEAN
+    typedef int boolean;
+    #define FALSE 0
+    #define TRUE 1
+    #endif
 #endif
 
 /* CODE FOR READING/WRITING JPEG FROM STREAMS