Index: trunk/ppStack/src/ppStackMatch.c
===================================================================
--- trunk/ppStack/src/ppStackMatch.c	(revision 19548)
+++ trunk/ppStack/src/ppStackMatch.c	(revision 19599)
@@ -72,7 +72,4 @@
     bool mdok;                          // Status of MD lookup
     bool renorm = psMetadataLookupBool(&mdok, recipe, "RENORM"); // Renormalise variances?
-    psStatsOptions renormMean = psMetadataLookupS32(&mdok, recipe, "RENORM.MEAN"); // Statistic for mean
-    psStatsOptions renormStdev = psMetadataLookupS32(&mdok, recipe, "RENORM.STDEV"); // Statistic for stdev
-    int renormWidth = psMetadataLookupS32(&mdok, recipe, "RENORM.WIDTH"); // Width for renormalisation box
     float penalty = psMetadataLookupF32(NULL, ppsub, "PENALTY"); // Penalty for wideness
     int threads = psMetadataLookupS32(NULL, config->arguments, "-threads"); // Number of threads
@@ -364,4 +361,11 @@
     // Renormalise the variances if desired
     if (renorm) {
+        // Statistics for renormalisation
+        psStatsOptions renormMean = psStatsOptionFromString(psMetadataLookupStr(&mdok, recipe,
+                                                                                "RENORM.MEAN"));
+        psStatsOptions renormStdev = psStatsOptionFromString(psMetadataLookupS32(&mdok, recipe,
+                                                                                 "RENORM.STDEV"));
+        int renormWidth = psMetadataLookupS32(&mdok, recipe, "RENORM.WIDTH"); // Width for renormalisation box
+
         psLogMsg("ppStack", PS_LOG_INFO, "Renormalising variance map.");
         if (!pmReadoutWeightRenorm(readout, maskBad, renormMean, renormStdev, renormWidth, rng)) {