diff --git a/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/DispatchQuery.java b/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/DispatchQuery.java
index 4a6cfea52..c69b9ae86 100644
--- a/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/DispatchQuery.java
+++ b/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/DispatchQuery.java
@@ -530,7 +530,7 @@ private static final String replaceQueryForFifo(String query) {
         "str_user, " +
         "int_uid, " +
         "str_log_dir, " +
-        "str_os, " +
+        "COALESCE(str_os, '') AS str_os, " +
         "b_loki_enabled, " +
         "str_loki_url, " +
         "frame_name, " +
diff --git a/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/FrameDaoJdbc.java b/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/FrameDaoJdbc.java
index ac73957f3..19a49f5b1 100644
--- a/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/FrameDaoJdbc.java
+++ b/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/FrameDaoJdbc.java
@@ -350,7 +350,7 @@ public DispatchFrame mapRow(ResultSet rs, int rowNum) throws SQLException {
             "job.str_user,"+
             "job.int_uid,"+
             "job.str_log_dir,"+
-            "job.str_os,"+
+            "COALESCE(str_os, '') AS str_os, " +
             "job.b_loki_enabled,"+
             "job.str_loki_url,"+
             "frame.str_name AS frame_name, "+
diff --git a/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/NestedWhiteboardDaoJdbc.java b/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/NestedWhiteboardDaoJdbc.java
index 8c920c5a4..fdd147ca1 100644
--- a/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/NestedWhiteboardDaoJdbc.java
+++ b/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/NestedWhiteboardDaoJdbc.java
@@ -94,7 +94,7 @@ public CachedJobWhiteboardMapper(NestedJobWhiteboardMapper result) {
             "job.b_paused, " +
             "job.b_autoeat, " +
             "job.b_comment, " +
-            "job.str_os, " +
+            "COALESCE(str_os, '') AS str_os, " +
             "job.int_frame_count, " +
             "job.int_layer_count, " +
             "job_stat.int_waiting_count, " +
diff --git a/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/ProcDaoJdbc.java b/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/ProcDaoJdbc.java
index 2a597cfeb..0e24ed1c8 100644
--- a/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/ProcDaoJdbc.java
+++ b/cuebot/src/main/java/com/imageworks/spcue/dao/postgres/ProcDaoJdbc.java
@@ -356,7 +356,7 @@ public VirtualProc mapRow(ResultSet rs, int rowNum) throws SQLException {
             "proc.int_virt_max_used,"+
             "proc.int_virt_used,"+
             "host.str_name AS host_name, " +
-            "job.str_os " +
+            "COALESCE(job.str_os, '') AS str_os " +
         "FROM " +
             "proc, " +
             "job, " +
@@ -389,7 +389,7 @@ public VirtualProc findVirtualProc(FrameInterface frame) {
               "proc.*, " +
               "host.str_name AS host_name, " +
               "host.pk_alloc, " +
-              "job.str_os, " +
+              "COALESCE(job.str_os, '') AS str_os, " +
               "alloc.pk_facility " +
           "FROM " +
               "proc, " +
@@ -530,7 +530,7 @@ public String getCurrentFrameId(ProcInterface p) {
           "SELECT " +
               "proc.*, " +
               "host.str_name AS host_name, " +
-              "job.str_os, " +
+              "COALESCE(job.str_os, '') AS str_os, " +
               "host.pk_alloc, " +
               "alloc.pk_facility " +
           "FROM " +