Index: trunk/psModules/src/imcombine/pmSubtraction.c
===================================================================
--- trunk/psModules/src/imcombine/pmSubtraction.c	(revision 19164)
+++ trunk/psModules/src/imcombine/pmSubtraction.c	(revision 19170)
@@ -698,5 +698,5 @@
             // subtract well, in which case very few (if any) stars will be legitimately rejected for being
             // low.
-            if (deviations->data.F32[i] - mean > limit) {
+            if (fabsf(deviations->data.F32[i] - mean) > limit) {
                 // Mask out the stamp in the image so you it's not found again
                 psTrace("psModules.imcombine", 3, "Rejecting stamp %d (%d,%d)\n", i,