Index: trunk/psModules/src/concepts/pmConcepts.c
===================================================================
--- trunk/psModules/src/concepts/pmConcepts.c	(revision 17867)
+++ trunk/psModules/src/concepts/pmConcepts.c	(revision 17874)
@@ -1226,5 +1226,5 @@
         replace[0] = '{'; \
         strcpy(replace + 1, concept); \
-        strcpy(replace + length + 1, "}"); \
+        strcpy(replace + length, "}"); \
         \
         psTrace("psModules.concepts", 10, "Interpolating concept %s for %s", replace, value); \
@@ -1259,5 +1259,5 @@
         char concept[length];  // Name of concept
         strncpy(concept, start + 1, length - 1);
-        concept[length] = '\0';
+        concept[length - 1] = '\0';
 
         psTrace("psModules.concepts", 7, "Interpolating concept %s", concept);