diff --git a/src/engine/objects/Mine.java b/src/engine/objects/Mine.java
index 1e25ab47..239cf197 100644
--- a/src/engine/objects/Mine.java
+++ b/src/engine/objects/Mine.java
@@ -288,7 +288,7 @@ try{
 		// Adjust the serialized mine time based upon whether
 		// the Guild's mine window has passed or not.
 
-		if (mineOwnerGuild != null) {
+		if (mineOwnerGuild.isErrant() == false) {
 
 			int guildWOO = mineOwnerGuild.getMineTime();
 			LocalDateTime guildMineTime = mineTime.withHour(guildWOO);
diff --git a/src/engine/workthreads/HourlyJobThread.java b/src/engine/workthreads/HourlyJobThread.java
index 2a864421..a98946ef 100644
--- a/src/engine/workthreads/HourlyJobThread.java
+++ b/src/engine/workthreads/HourlyJobThread.java
@@ -105,7 +105,7 @@ public class HourlyJobThread implements Runnable {
 
 					// Open Errant Mines
 
-					if (mine.getOwningGuild() == null) {
+					if (mine.getOwningGuild().isErrant()) {
 						mine.handleStartMineWindow();
 						Mine.setLastChange(System.currentTimeMillis());
 						continue;