diff --git a/src/cluster.c b/src/cluster.c
index 17ba6a74..56deb927 100644
--- a/src/cluster.c
+++ b/src/cluster.c
@@ -4746,8 +4746,7 @@ NULL
         clusterReset(hard);
         addReply(c,shared.ok);
     } else {
-         addReplyErrorFormat(c, "Unknown subcommand or wrong number of arguments for '%s'. Try CLUSTER HELP",
-            (char*)c->argv[1]->ptr);
+        addReplySubSyntaxError(c);
         return;
     }
 }
diff --git a/src/config.c b/src/config.c
index bfb31030..4e6438e8 100644
--- a/src/config.c
+++ b/src/config.c
@@ -2149,8 +2149,7 @@ NULL
             addReply(c,shared.ok);
         }
     } else {
-         addReplyErrorFormat(c, "Unknown subcommand or wrong number of arguments for '%s'. Try CONFIG HELP",
-            (char*)c->argv[1]->ptr);
+        addReplySubSyntaxError(c);
         return;
     }
 }
diff --git a/src/debug.c b/src/debug.c
index 0ab864e7..0c5ea9a9 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -553,8 +553,7 @@ NULL
         clearReplicationId2();
         addReply(c,shared.ok);
     } else {
-        addReplyErrorFormat(c, "Unknown subcommand or wrong number of arguments for '%s'. Try DEBUG HELP",
-            (char*)c->argv[1]->ptr);
+        addReplySubSyntaxError(c);
         return;
     }
 }
diff --git a/src/object.c b/src/object.c
index 19af1ec0..a4942fbe 100644
--- a/src/object.c
+++ b/src/object.c
@@ -1197,7 +1197,7 @@ NULL
          * when the key is read or overwritten. */
         addReplyLongLong(c,LFUDecrAndReturn(o));
     } else {
-        addReplyErrorFormat(c, "Unknown subcommand or wrong number of arguments for '%s'. Try OBJECT help", (char *)c->argv[1]->ptr);
+        addReplySubSyntaxError(c);
     }
 }
 
diff --git a/src/pubsub.c b/src/pubsub.c
index d1fffa20..7f7be52d 100644
--- a/src/pubsub.c
+++ b/src/pubsub.c
@@ -372,7 +372,6 @@ NULL
         /* PUBSUB NUMPAT */
         addReplyLongLong(c,listLength(server.pubsub_patterns));
     } else {
-        addReplyErrorFormat(c, "Unknown subcommand or wrong number of arguments for '%s'. Try PUBSUB HELP",
-            (char*)c->argv[1]->ptr);
+        addReplySubSyntaxError(c);
     }
 }
diff --git a/src/scripting.c b/src/scripting.c
index 3c0597c7..85bce7be 100644
--- a/src/scripting.c
+++ b/src/scripting.c
@@ -1514,7 +1514,7 @@ NULL
             return;
         }
     } else {
-        addReplyErrorFormat(c, "Unknown subcommand or wrong number of arguments for '%s'. Try SCRIPT HELP", (char*)c->argv[1]->ptr);
+        addReplySubSyntaxError(c);
     }
 }
 
diff --git a/src/server.c b/src/server.c
index 375c6477..1e4d54b8 100644
--- a/src/server.c
+++ b/src/server.c
@@ -2866,7 +2866,7 @@ NULL
         for (j = 0; j < numkeys; j++) addReplyBulk(c,c->argv[keys[j]+2]);
         getKeysFreeResult(keys);
     } else {
-        addReplyErrorFormat(c, "Unknown subcommand or wrong number of arguments for '%s'. Try COMMAND HELP", (char*)c->argv[1]->ptr);
+        addReplySubSyntaxError(c);
     }
 }
 
diff --git a/src/slowlog.c b/src/slowlog.c
index 2613435a..aed5707d 100644
--- a/src/slowlog.c
+++ b/src/slowlog.c
@@ -187,6 +187,6 @@ NULL
         }
         setDeferredMultiBulkLength(c,totentries,sent);
     } else {
-         addReplyErrorFormat(c, "Unknown subcommand or wrong number of arguments for '%s'. Try SLOWLOG HELP", (char*)c->argv[1]->ptr);
+        addReplySubSyntaxError(c);
     }
 }