diff --git a/ext/pdo/pdo_stmt.c b/ext/pdo/pdo_stmt.c
index 4f7c74eaeba..62caef2e5fe 100755
--- a/ext/pdo/pdo_stmt.c
+++ b/ext/pdo/pdo_stmt.c
@@ -306,10 +306,6 @@ static int really_register_bound_param(struct pdo_bound_param_data *param, pdo_s
 		}
 	}
 
-	if (is_param && !rewrite_name_to_position(stmt, param TSRMLS_CC)) {
-		return 0;
-	}
-
 	if (param->name) {
 		if (is_param && param->name[0] != ':') {
 			char *temp = emalloc(++param->namelen + 1);
@@ -320,6 +316,14 @@ static int really_register_bound_param(struct pdo_bound_param_data *param, pdo_s
 			param->name = estrndup(param->name, param->namelen);
 		}
 	}
+
+	if (is_param && !rewrite_name_to_position(stmt, param TSRMLS_CC)) {
+		if (param->name) {
+			efree(param->name);
+			param->name = NULL;
+		}
+		return 0;
+	}
 	
 	/* tell the driver we just created a parameter */
 	if (stmt->methods->param_hook) {