diff --git a/lib/common/output_html.c b/lib/common/output_html.c
index 6127df2..6e21031 100644
--- a/lib/common/output_html.c
+++ b/lib/common/output_html.c
@@ -191,6 +191,9 @@ static void
 html_reset(pcmk__output_t *out) {
     CRM_ASSERT(out != NULL);
 
+    out->dest = freopen(NULL, "w", out->dest);
+    CRM_ASSERT(out->dest != NULL);
+
     if (out->priv != NULL) {
         finish_reset_common(out, CRM_EX_OK, true);
     }
diff --git a/lib/common/output_log.c b/lib/common/output_log.c
index 0208046..8422ac2 100644
--- a/lib/common/output_log.c
+++ b/lib/common/output_log.c
@@ -72,6 +72,9 @@ static void
 log_reset(pcmk__output_t *out) {
     CRM_ASSERT(out != NULL);
 
+    out->dest = freopen(NULL, "w", out->dest);
+    CRM_ASSERT(out->dest != NULL);
+
     log_free_priv(out);
     log_init(out);
 }
diff --git a/lib/common/output_text.c b/lib/common/output_text.c
index 8f15849..2f7e5b0 100644
--- a/lib/common/output_text.c
+++ b/lib/common/output_text.c
@@ -75,6 +75,9 @@ static void
 text_reset(pcmk__output_t *out) {
     CRM_ASSERT(out != NULL);
 
+    out->dest = freopen(NULL, "w", out->dest);
+    CRM_ASSERT(out->dest != NULL);
+
     text_free_priv(out);
     text_init(out);
 }
diff --git a/lib/common/output_xml.c b/lib/common/output_xml.c
index b64a71d..9f8e01b 100644
--- a/lib/common/output_xml.c
+++ b/lib/common/output_xml.c
@@ -165,6 +165,9 @@ static void
 xml_reset(pcmk__output_t *out) {
     CRM_ASSERT(out != NULL);
 
+    out->dest = freopen(NULL, "w", out->dest);
+    CRM_ASSERT(out->dest != NULL);
+
     if (out->priv != NULL) {
         finish_reset_common(out, CRM_EX_OK, true);
     }
diff --git a/tools/crm_mon.c b/tools/crm_mon.c
index 6c50447..7036c3f 100644
--- a/tools/crm_mon.c
+++ b/tools/crm_mon.c
@@ -2018,6 +2018,10 @@ mon_refresh_display(gpointer user_data)
             break;
     }
 
+    if (options.daemonize) {
+        out->reset(out);
+    }
+
     stonith_history_free(stonith_history);
     stonith_history = NULL;
     pe_reset_working_set(mon_data_set);
@@ -2183,6 +2187,11 @@ clean_up(crm_exit_t exit_code)
      * crm_mon to be able to do so.
      */
     if (out != NULL) {
+        if (options.daemonize) {
+            out->dest = freopen(NULL, "w", out->dest);
+            CRM_ASSERT(out->dest != NULL);
+        }
+
         switch (output_format) {
             case mon_output_cgi:
             case mon_output_html: