diff --git a/NAMESPACE b/NAMESPACE
index 802cf6c58..c6bbf3c90 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -255,16 +255,16 @@ S3method(sql_escape_datetime,DBIConnection)
 S3method(sql_escape_datetime,MariaDBConnection)
 S3method(sql_escape_datetime,MySQL)
 S3method(sql_escape_datetime,MySQLConnection)
-S3method(sql_escape_ident,DBIConnection)
 S3method(sql_escape_ident,TestConnection)
+S3method(sql_escape_ident,default)
 S3method(sql_escape_logical,"Microsoft SQL Server")
 S3method(sql_escape_logical,ACCESS)
 S3method(sql_escape_logical,DBIConnection)
 S3method(sql_escape_logical,SQLiteConnection)
 S3method(sql_escape_raw,"Microsoft SQL Server")
 S3method(sql_escape_raw,DBIConnection)
-S3method(sql_escape_string,DBIConnection)
 S3method(sql_escape_string,TestConnection)
+S3method(sql_escape_string,default)
 S3method(sql_expr_matches,DBIConnection)
 S3method(sql_expr_matches,MariaDBConnection)
 S3method(sql_expr_matches,MySQL)
@@ -416,7 +416,7 @@ S3method(supports_window_clause,PqConnection)
 S3method(supports_window_clause,Redshift)
 S3method(supports_window_clause,RedshiftConnection)
 S3method(supports_window_clause,SQLiteConnection)
-S3method(table_path_components,DBIConnection)
+S3method(table_path_components,default)
 S3method(tail,tbl_lazy)
 S3method(tally,tbl_lazy)
 S3method(tbl,src_dbi)
diff --git a/R/simulate.R b/R/simulate.R
index 04a950c94..35890f0e1 100644
--- a/R/simulate.R
+++ b/R/simulate.R
@@ -27,7 +27,7 @@ sql_escape_ident <- function(con, x) {
   UseMethod("sql_escape_ident")
 }
 #' @export
-sql_escape_ident.DBIConnection <- function(con, x) {
+sql_escape_ident.default <- function(con, x) {
   dbQuoteIdentifier(con, x)
 }
 #' @export
@@ -43,7 +43,7 @@ sql_escape_string <- function(con, x) {
   UseMethod("sql_escape_string")
 }
 #' @export
-sql_escape_string.DBIConnection <- function(con, x) {
+sql_escape_string.default <- function(con, x) {
   dbQuoteString(con, x)
 }
 #' @export
diff --git a/R/table-name.R b/R/table-name.R
index d8f7c62bc..628f25ffe 100644
--- a/R/table-name.R
+++ b/R/table-name.R
@@ -113,7 +113,7 @@ table_path_components <- function(x, con) {
 }
 
 #' @export
-table_path_components.DBIConnection <- function(x, con) {
+table_path_components.default <- function(x, con) {
   quote_char <- substr(sql_escape_ident(con, ""), 1, 1)
 
   lapply(x, function(x) {