diff --git a/common/JackNetTool.cpp b/common/JackNetTool.cpp
index 36e78ef7..791af963 100644
--- a/common/JackNetTool.cpp
+++ b/common/JackNetTool.cpp
@@ -459,7 +459,7 @@ namespace Jack
 
         if (sub_cycle != fLastSubCycle + 1) {
             jack_error("Packet(s) missing from... %d %d", fLastSubCycle, sub_cycle);
-            res = 1;
+            res = NET_PACKET_ERROR;
         }
 
         fLastSubCycle = sub_cycle;
@@ -594,7 +594,7 @@ namespace Jack
 
         if (sub_cycle != fLastSubCycle + 1) {
             jack_error("Packet(s) missing from... %d %d", fLastSubCycle, sub_cycle);
-            res = -1;
+            res = NET_PACKET_ERROR;
         }
 
         fLastSubCycle = sub_cycle;
diff --git a/common/JackNetTool.h b/common/JackNetTool.h
index 844ed0b8..e78b4ea5 100644
--- a/common/JackNetTool.h
+++ b/common/JackNetTool.h
@@ -439,7 +439,7 @@ namespace Jack
             }
             if (sub_cycle != fLastSubCycle + 1) {
                 jack_error("Packet(s) missing from... %d %d", fLastSubCycle, sub_cycle);
-                res = -1;
+                res = NET_PACKET_ERROR;
             }
 
             fLastSubCycle = sub_cycle;
@@ -481,7 +481,7 @@ namespace Jack
             }
             if (sub_cycle != fLastSubCycle + 1) {
                 jack_error("Packet(s) missing from... %d %d", fLastSubCycle, sub_cycle);
-                res = -1;
+                res = NET_PACKET_ERROR;
             }
 
             fLastSubCycle = sub_cycle;
@@ -581,7 +581,7 @@ namespace Jack
 
                 if (sub_cycle != fLastSubCycle + 1) {
                     jack_error("Packet(s) missing from... %d %d", fLastSubCycle, sub_cycle);
-                    res = -1;
+                    res = NET_PACKET_ERROR;
                 }
 
                 fLastSubCycle = sub_cycle;