Index: trunk/ppStack/src/ppStackMatch.c
===================================================================
--- trunk/ppStack/src/ppStackMatch.c	(revision 30685)
+++ trunk/ppStack/src/ppStackMatch.c	(revision 31158)
@@ -142,5 +142,5 @@
     bool mdok;                          // Status of MD lookup
     float penalty = psMetadataLookupF32(NULL, ppsub, "PENALTY"); // Penalty for wideness
-    int threads = psMetadataLookupS32(NULL, config->arguments, "-threads"); // Number of threads
+    int threads = psMetadataLookupS32(NULL, config->arguments, "NTHREADS"); // Number of threads
 
     // Replaced pmReadoutMaskNonfinite with pmReadoutMaskInvalid (tests for already masked pixels)