Index: trunk/ppSub/src/ppSubMatchPSFs.c
===================================================================
--- trunk/ppSub/src/ppSubMatchPSFs.c	(revision 30619)
+++ trunk/ppSub/src/ppSubMatchPSFs.c	(revision 31156)
@@ -374,5 +374,5 @@
     }
 
-    int threads = psMetadataLookupS32(NULL, config->arguments, "-threads"); // Number of threads
+    int threads = psMetadataLookupS32(NULL, config->arguments, "NTHREADS"); // Number of threads
     if (threads > 0) {
         pmSubtractionThreadsInit();