diff --git a/bin/pt-mysql-summary b/bin/pt-mysql-summary
index 40f74e49..f5114cc1 100755
--- a/bin/pt-mysql-summary
+++ b/bin/pt-mysql-summary
@@ -1366,6 +1366,9 @@ summarize_processlist () {
          }
          \$1 == \"Time:\" {
             t = \$2;
+            if ( t == \"NULL\" ) { 
+                t = 0;
+            }
          }
          \$1 == \"Command:\" {
             c = \$2;
diff --git a/lib/bash/report_mysql_info.sh b/lib/bash/report_mysql_info.sh
index a523ef1f..f3cde980 100644
--- a/lib/bash/report_mysql_info.sh
+++ b/lib/bash/report_mysql_info.sh
@@ -332,6 +332,9 @@ summarize_processlist () {
          }
          \$1 == \"Time:\" {
             t = \$2;
+            if ( t == \"NULL\" ) { 
+                t = 0;
+            }
          }
          \$1 == \"Command:\" {
             c = \$2;
diff --git a/t/pt-mysql-summary/pt-mysql-summary.t b/t/pt-mysql-summary/pt-mysql-summary.t
index c9b15920..f2cfe44a 100644
--- a/t/pt-mysql-summary/pt-mysql-summary.t
+++ b/t/pt-mysql-summary/pt-mysql-summary.t
@@ -87,9 +87,13 @@ like(
    "InnoDB section present"
 );
 
+my $users_count = 2;
+if ($ENV{FORK} eq 'mariadb') {
+    $users_count = 8;
+}
 like(
    $out,
-   qr/Users \| 2/,
+   qr/Users \| $users_count/,
    "Security works"
 );