diff --git a/src/errors.dat b/src/errors.dat
index 7e4e5a3..7a18303 100644
--- a/src/errors.dat
+++ b/src/errors.dat
@@ -44,7 +44,7 @@ DAT(226,"no head curve or power rating for pump")
 DAT(227,"invalid head curve for pump")
 DAT(230,"nonincreasing x-values for curve")
 DAT(233,"network has unconnected nodes")
-DAT(2331,"network has an unconnected node with ID: ")
+DAT(234,"network has an unconnected node with ID: ")
 
 // These errors apply only to API functions
 DAT(240,"nonexistent source")
diff --git a/src/project.c b/src/project.c
index 6893488..b470ec3 100644
--- a/src/project.c
+++ b/src/project.c
@@ -823,7 +823,7 @@ int unlinked(Project *pr)
         if (pr->network.Adjlist[i] == NULL)
         {
             count++;
-            sprintf(pr->Msg, "Error 2331: %s %s", geterrmsg(2331, errmsg), net->Node[i].ID);
+            sprintf(pr->Msg, "Error 234: %s %s", geterrmsg(234, errmsg), net->Node[i].ID);
             writeline(pr, pr->Msg);
         }
         if (count >= 10) break;