diff --git a/owlps-aggregator/owlps-aggregator.h b/owlps-aggregator/owlps-aggregator.h
index ae13778..b94c091 100644
--- a/owlps-aggregator/owlps-aggregator.h
+++ b/owlps-aggregator/owlps-aggregator.h
@@ -9,7 +9,7 @@
 
 
 /* Arguments & program configuration */
-#define OPTIONS "Aa:c:C:f:hi:k:K:l:o:p:t:vV" // getopt string
+#define OPTIONS "Aa:c:C:f:hi:k:K:l:o:p:qt:vV" // getopt string
 #define DEFAULT_CONFIG_FILE "/usr/local/etc/owlps/owlps-aggregator.conf"
 #define DEFAULT_AGGREGATE_TIMEOUT 1500 // milliseconds
 #define DEFAULT_KEEP_TIMEOUT 3000 // milliseconds
diff --git a/owlps-aggregator/owlps-aggregatord.c b/owlps-aggregator/owlps-aggregatord.c
index 727d9ad..e4f7276 100644
--- a/owlps-aggregator/owlps-aggregatord.c
+++ b/owlps-aggregator/owlps-aggregatord.c
@@ -302,6 +302,10 @@ void parse_command_line(int argc, char **argv)
         case 'p' :
           cfg_setint(cfg, "positioner_port", strtol(optarg, NULL, 0)) ;
           break ;
+        case 'q' :
+          // Quiet mode: reset the verbose level
+          cfg_setint(cfg, "verbose", 0) ;
+          break ;
         case 't' :
           cfg_setint(cfg, "aggregate_timeout", strtol(optarg, NULL, 0)) ;
           break ;
@@ -1264,7 +1268,7 @@ void print_usage()
   printf("Usage:\n"
          "\t%s"
          " [-f config_file]"
-         " [-v[v[v[v]]]]"
+         " [-v[v[v[v]]] | -q]"
          " -o output_file"
          " [-i positionner_ip]"
          " [-p positioner_port]"
@@ -1289,6 +1293,7 @@ void print_usage()
          " increase the level of verbosity (1 = warnings, 2 = useful"
          " information, 3 = too much information, 4 = displays the"
          " detail of each and every received request).\n"
+         "\t-q\t\tQuiet mode (default): sets the verbose level to 0.\n"
 
          "Output options:\n"
          "\t-o output_file\t\tAggregated requests will be appended to"