diff --git a/epan/charsets.c b/epan/charsets.c
index 85cb3695d2..badd620f70 100644
--- a/epan/charsets.c
+++ b/epan/charsets.c
@@ -1908,7 +1908,7 @@ get_dect_standard_8bits_string(wmem_allocator_t *scope, const guint8 *ptr, gint
     const guint8  *current_byte_ptr;
     wmem_strbuf_t *strbuf;
 
-    strbuf = wmem_strbuf_sized_new(scope, length+1, 0);
+    strbuf = wmem_strbuf_new_sized(scope, length+1);
 
     for (position = 0, current_byte_ptr = ptr; position < length; current_byte_ptr++, position++) {
         if (*current_byte_ptr & 0x80) {
diff --git a/epan/dissectors/packet-dect-nwk.c b/epan/dissectors/packet-dect-nwk.c
index 1c9f16d3b4..d7c7562ab5 100644
--- a/epan/dissectors/packet-dect-nwk.c
+++ b/epan/dissectors/packet-dect-nwk.c
@@ -1834,7 +1834,7 @@ static proto_item* add_dect_nwk_dect_charset_tree_item(proto_tree *tree, packet_
 	keypad_string = tvb_get_string_enc(pinfo->pool, tvb, start, length, ENC_DECT_STANDARD_8BITS);
 	current_char_ptr = keypad_string;
 
-	keypad_information = wmem_strbuf_sized_new(pinfo->pool, length, 0);
+	keypad_information = wmem_strbuf_new_sized(pinfo->pool, length);
 	for ( current_char_position = 0; current_char_position < length; current_char_position++ ) {
 		current_char = g_utf8_get_char(current_char_ptr);
 		if ( current_char < 0x20 ) {