diff --git a/client/cpu_sched.cpp b/client/cpu_sched.cpp
index a108017e95..599124135d 100644
--- a/client/cpu_sched.cpp
+++ b/client/cpu_sched.cpp
@@ -178,8 +178,7 @@ struct PROC_RESOURCES {
             // for that resource type.
             // Inefficient, but necessary to avoid starvation cases.
             //
-            bool dont_reserve = rsc_work_fetch[rt].has_exclusions;
-            if (!dont_reserve) {
+            if (! rsc_work_fetch[rt].has_exclusions) {
                 reserve_coprocs(*rp);
             }
             //ncpus_used_st += rp->avp->avg_ncpus;
diff --git a/client/log_flags.cpp b/client/log_flags.cpp
index c33feb1173..9fa79a8dec 100644
--- a/client/log_flags.cpp
+++ b/client/log_flags.cpp
@@ -583,6 +583,12 @@ void process_gpu_exclusions() {
                 COPROC& cp = coprocs.coprocs[k];
                 if (eg.type == cp.type) {
                     found = true;
+
+                    // skip exclusions of non-existent devices
+                    //
+                    if (eg.device_num && (cp.device_num_index(eg.device_num) < 0)) {
+                        break;
+                    }
                     rsc_work_fetch[k].has_exclusions = true;
                     break;
                 }