diff --git a/collector/sys_user_summary.go b/collector/sys_user_summary.go
index e4d38ff1..f46221d3 100644
--- a/collector/sys_user_summary.go
+++ b/collector/sys_user_summary.go
@@ -118,7 +118,7 @@ func (ScrapeSysUserSummary) Scrape(ctx context.Context, instance *instance, ch c
 		current_connections    uint64
 		total_connections      uint64
 		unique_hosts           uint64
-		current_memory         uint64
+		current_memory         int64
 		total_memory_allocated uint64
 	)
 
diff --git a/collector/sys_user_summary_test.go b/collector/sys_user_summary_test.go
index 38d569f6..f44ce730 100644
--- a/collector/sys_user_summary_test.go
+++ b/collector/sys_user_summary_test.go
@@ -77,6 +77,19 @@ func TestScrapeSysUserSummary(t *testing.T) {
 			"210",
 			"211",
 		},
+		{
+			"user3",
+			"310",
+			"320",
+			"340",
+			"350",
+			"360",
+			"370",
+			"380",
+			"390",
+			"-16360",
+			"411",
+		},
 	}
 	expectedMetrics := []MetricResult{}
 	// Register the query results with mock SQL driver and assemble expected metric results list