diff --git a/tools/analysis/traceevent/src/header.rs b/tools/analysis/traceevent/src/header.rs
index 65cba4d0df..1762b9d4ad 100644
--- a/tools/analysis/traceevent/src/header.rs
+++ b/tools/analysis/traceevent/src/header.rs
@@ -2178,8 +2178,8 @@ mod tests {
                 name: "wakeup".into(),
                 id: 3,
                 fmt: EventFmt {
-                    print_args: vec![],
-                    print_fmt: PrintFmtStr {
+                    print_args: Ok(vec![]),
+                    print_fmt: Ok(PrintFmtStr {
                         vbin_decoders: OnceCell::new(),
                         atoms: vec![
                             new_variable_atom!(
@@ -2240,8 +2240,8 @@ mod tests {
                             PrintAtom::Fixed("]".into()),
 
                         ],
-                    },
-                    struct_fmt: StructFmt {
+                    }),
+                    struct_fmt: Ok(StructFmt {
                         fields: vec![
                             FieldFmt {
                                 declaration: Declaration {
@@ -2343,7 +2343,7 @@ mod tests {
                                 decoder: Arc::new(()),
                             },
                         ]
-                    }
+                    })
                 }
             }
 
@@ -2355,8 +2355,8 @@ mod tests {
                 name: "user_stack".into(),
                 id: 12,
                 fmt: EventFmt {
-                    print_args: vec![],
-                    print_fmt: PrintFmtStr {
+                    print_args: Ok(vec![]),
+                    print_fmt: Ok(PrintFmtStr {
                         vbin_decoders: OnceCell::new(),
                         atoms: vec![
                             PrintAtom::Fixed("\t=> ".into()),
@@ -2368,8 +2368,8 @@ mod tests {
                                 PrintPrecision::Unmodified,
                             ),
                         ]
-                    },
-                    struct_fmt: StructFmt {
+                    }),
+                    struct_fmt: Ok(StructFmt {
                         fields: vec![
                             FieldFmt {
                                 declaration: Declaration {
@@ -2426,7 +2426,7 @@ mod tests {
                                 decoder: Arc::new(()),
                             },
                         ]
-                    }
+                    })
                 }
             }
         );