diff --git a/src/osgPlugins/dicom/ReaderWriterDICOM.cpp b/src/osgPlugins/dicom/ReaderWriterDICOM.cpp
index 5ae660bd4..d3cea8c83 100644
--- a/src/osgPlugins/dicom/ReaderWriterDICOM.cpp
+++ b/src/osgPlugins/dicom/ReaderWriterDICOM.cpp
@@ -486,6 +486,7 @@ class ReaderWriterDICOM : public osgDB::ReaderWriter
                     break;
                 default:
                     dataType = 0;
+                    pixelSize = 1;
                     break;
             }