diff --git a/src/osgDB/FileUtils_Unix.cpp b/src/osgDB/FileUtils_Unix.cpp
index 1bbb4da61..c4e7710d9 100644
--- a/src/osgDB/FileUtils_Unix.cpp
+++ b/src/osgDB/FileUtils_Unix.cpp
@@ -93,6 +93,7 @@ char *osgDB::findFileInPath( const char *_file, const char * filePath )
     char *path = 0L;
 
     notify(DEBUG_INFO) << "FindFileInPath() : trying " << _file << " ...\n";
+    
     if( access( _file, F_OK ) == 0 ) 
     {
         return strdup(_file);
@@ -100,7 +101,9 @@ char *osgDB::findFileInPath( const char *_file, const char * filePath )
 
     tptr    = strdup( filePath );
     tmppath = strtok(  tptr, PathDelimitor );
-
+    
+    if (!tmppath) return NULL;
+    
     do
     {
         sprintf( pathbuff, "%s/%s", tmppath, _file );
diff --git a/src/osgDB/FileUtils_Windows.cpp b/src/osgDB/FileUtils_Windows.cpp
index 628945440..9c28037fa 100644
--- a/src/osgDB/FileUtils_Windows.cpp
+++ b/src/osgDB/FileUtils_Windows.cpp
@@ -93,6 +93,8 @@ char *osgDB::findFileInPath( const char *_file, const char * filePath )
     tptr    = strdup( filePath );
     tmppath = strtok(  tptr, PathDelimitor );
 
+    if (!tmppath) return NULL;
+
     do
     {
         sprintf( pathbuff, "%s/%s", tmppath, _file );