diff --git a/src/pattern.c b/src/pattern.c
index bebeabedb..78728f617 100644
--- a/src/pattern.c
+++ b/src/pattern.c
@@ -115,14 +115,6 @@ static struct chunk *get_trash_chunk(void)
 	return &trash_chunk;
 }
 
-/*
-* Used to set pattern data from a struct chunk, could be the trash struct chunk
-*/
-static void pattern_data_setstring(union pattern_data *data, struct chunk *c)
-{
-	chunk_initlen(&data->str, c->str, c->size, c->len);
-}
-
 /******************************************************************/
 /*          Pattern casts functions                               */
 /******************************************************************/
@@ -141,7 +133,7 @@ static int c_ip2str(union pattern_data *data)
 		return 0;
 
 	trash->len = strlen(trash->str);
-	pattern_data_setstring(data, trash);
+	data->str = *trash;
 
 	return 1;
 }
@@ -160,8 +152,7 @@ static int c_ipv62str(union pattern_data *data)
 		return 0;
 
 	trash->len = strlen(trash->str);
-	pattern_data_setstring(data, trash);
-
+	data->str = *trash;
 	return 1;
 }
 
@@ -203,9 +194,7 @@ static int c_int2str(union pattern_data *data)
 	trash->size = trash->size - (pos - trash->str);
 	trash->str = pos;
 	trash->len = strlen(pos);
-
-	pattern_data_setstring(data, trash);
-
+	data->str = *trash;
 	return 1;
 }
 
@@ -215,9 +204,7 @@ static int c_datadup(union pattern_data *data)
 
 	trash->len = data->str.len < trash->size ? data->str.len : trash->size;
 	memcpy(trash->str, data->str.str, trash->len);
-
-	pattern_data_setstring(data, trash);
-
+	data->str = *trash;
 	return 1;
 }