Index: trunk/psModules/src/detrend/pmBias.c
===================================================================
--- trunk/psModules/src/detrend/pmBias.c	(revision 19432)
+++ trunk/psModules/src/detrend/pmBias.c	(revision 21183)
@@ -45,5 +45,5 @@
                 inImage->data.F32[i][j] -= subImage->data.F32[i+yOffset][j+xOffset];
                 if (inMask && subMask) {
-                    inMask->data.U8[i][j] |= subMask->data.U8[i+yOffset][j+xOffset];
+                    inMask->data.PS_TYPE_IMAGE_MASK_DATA[i][j] |= subMask->data.PS_TYPE_IMAGE_MASK_DATA[i+yOffset][j+xOffset];
                 }
             }
@@ -54,5 +54,5 @@
                 inImage->data.F32[i][j] -= subImage->data.F32[i+yOffset][j+xOffset] * scale;
                 if (inMask && subMask) {
-                    inMask->data.U8[i][j] |= subMask->data.U8[i+yOffset][j+xOffset];
+                    inMask->data.PS_TYPE_IMAGE_MASK_DATA[i][j] |= subMask->data.PS_TYPE_IMAGE_MASK_DATA[i+yOffset][j+xOffset];
                 }
             }