diff --git a/pkg/query/flamegraph_table.go b/pkg/query/flamegraph_table.go
index 2c687742c7e..1e19cc14353 100644
--- a/pkg/query/flamegraph_table.go
+++ b/pkg/query/flamegraph_table.go
@@ -279,6 +279,9 @@ func (c *tableConverter) AddProfileLocation(l *profile.Location) uint32 {
 
 	lines := make([]*metastorev1alpha1.Line, 0, len(l.Lines))
 	for _, line := range l.Lines {
+		if line.Function == nil {
+			continue
+		}
 		lines = append(lines, &metastorev1alpha1.Line{
 			Line:          line.Line,
 			FunctionIndex: c.AddFunction(line.Function),
diff --git a/pkg/query/top.go b/pkg/query/top.go
index f8c829f1abe..a44889d1ddb 100644
--- a/pkg/query/top.go
+++ b/pkg/query/top.go
@@ -52,7 +52,7 @@ func GenerateTopTable(ctx context.Context, p parcaprofile.OldProfile) (*pb.Top,
 						},
 					},
 				}
-				if len(location.Lines) > 0 {
+				if len(location.Lines) > 0 && location.Lines[0].Function != nil {
 					// TODO: Return or merge multiple lines for samples
 					node.Meta.Function = location.Lines[0].Function
 					node.Meta.Line = &metastorev1alpha1.Line{