diff --git a/rcl_yaml_param_parser/src/parser.c b/rcl_yaml_param_parser/src/parser.c
index 3098ba5..54674a5 100644
--- a/rcl_yaml_param_parser/src/parser.c
+++ b/rcl_yaml_param_parser/src/parser.c
@@ -65,7 +65,7 @@ typedef struct namespace_tracker_s
   uint32_t num_parameter_ns;
 } namespace_tracker_t;
 
-#define MAX_STRING_SIZE 128U
+#define MAX_STRING_SIZE 256U
 #define PARAMS_KEY "ros__parameters"
 #define NODE_NS_SEPERATOR "/"
 #define PARAMETER_NS_SEPERATOR "."
diff --git a/rcl_yaml_param_parser/test/max_string_sz.yaml b/rcl_yaml_param_parser/test/max_string_sz.yaml
index 1b279f6..386f7be 100644
--- a/rcl_yaml_param_parser/test/max_string_sz.yaml
+++ b/rcl_yaml_param_parser/test/max_string_sz.yaml
@@ -5,5 +5,4 @@ lidar_ns:
   lidar_1:
     ros__parameters:
       id: 10
-      name: "A very long name that will not be supported by the yaml parser. The max supported string size is 128
-      characters. Anything over the max size will be rejected"
+      name: "A long string that will not be supported by the yaml parser. The maximum supported length is 256 characters. Anything over that limit will be rejected and therefore this message has to be a bit longer in order to exceed that threshold by just one character."