diff --git a/doc/scripting/data_struct_record_01.bro b/doc/scripting/data_struct_record_01.bro
index a80d30faae..ab28501f96 100644
--- a/doc/scripting/data_struct_record_01.bro
+++ b/doc/scripting/data_struct_record_01.bro
@@ -4,7 +4,7 @@ type Service: record {
     rfc: count;
 };
 
-function print_service(serv: Service): string
+function print_service(serv: Service)
     {
     print fmt("Service: %s(RFC%d)",serv$name, serv$rfc);
     
diff --git a/doc/scripting/data_struct_record_02.bro b/doc/scripting/data_struct_record_02.bro
index b10b3feac0..515c8a716c 100644
--- a/doc/scripting/data_struct_record_02.bro
+++ b/doc/scripting/data_struct_record_02.bro
@@ -9,7 +9,7 @@ type System: record {
     services: set[Service];
     };
 
-function print_service(serv: Service): string
+function print_service(serv: Service)
     {
     print fmt("  Service: %s(RFC%d)",serv$name, serv$rfc);
     
@@ -17,7 +17,7 @@ function print_service(serv: Service): string
         print fmt("    port: %s", p);
     }
 
-function print_system(sys: System): string
+function print_system(sys: System)
     {
     print fmt("System: %s", sys$name);