diff --git a/dialect/sql/builder.go b/dialect/sql/builder.go
index ab885a165..7836f34bd 100644
--- a/dialect/sql/builder.go
+++ b/dialect/sql/builder.go
@@ -1703,14 +1703,17 @@ func (p *Predicate) EqualFold(col, sub string) *Predicate {
 			// We assume the CHARACTER SET is configured to utf8mb4,
 			// because this how it is defined in dialect/sql/schema.
 			b.Ident(col).WriteString(" COLLATE utf8mb4_general_ci = ")
+			b.Arg(strings.ToLower(sub))
 		case dialect.Postgres:
 			b.Ident(col).WriteString(" ILIKE ")
+			w, _ := escape(sub)
+			b.Arg(strings.ToLower(w))
 		default: // SQLite.
 			f.Lower(col)
 			b.WriteString(f.String())
 			b.WriteOp(OpEQ)
+			b.Arg(strings.ToLower(sub))
 		}
-		b.Arg(strings.ToLower(sub))
 	})
 }
 
diff --git a/dialect/sql/builder_test.go b/dialect/sql/builder_test.go
index 830718cb4..aa1e80f6b 100644
--- a/dialect/sql/builder_test.go
+++ b/dialect/sql/builder_test.go
@@ -1019,6 +1019,22 @@ func TestBuilder(t *testing.T) {
 			wantQuery: `SELECT * FROM "users" WHERE "name" ILIKE $1 OR "name" ILIKE $2`,
 			wantArgs:  []interface{}{"bar", "baz"},
 		},
+		{
+			input: Dialect(dialect.Postgres).
+				Select().
+				From(Table("users")).
+				Where(Or(EqualFold("name", "BAR%"), EqualFold("name", "%BAZ"))),
+			wantQuery: `SELECT * FROM "users" WHERE "name" ILIKE $1 OR "name" ILIKE $2`,
+			wantArgs:  []interface{}{"bar\\%", "\\%baz"},
+		},
+		{
+			input: Dialect(dialect.Postgres).
+				Select().
+				From(Table("users")).
+				Where(Or(EqualFold("name", "BAR\\"), EqualFold("name", "\\BAZ"))),
+			wantQuery: `SELECT * FROM "users" WHERE "name" ILIKE $1 OR "name" ILIKE $2`,
+			wantArgs:  []interface{}{"bar\\\\", "\\\\baz"},
+		},
 		{
 			input: Dialect(dialect.MySQL).
 				Select().
diff --git a/entc/integration/integration_test.go b/entc/integration/integration_test.go
index 74a1cc939..574618836 100644
--- a/entc/integration/integration_test.go
+++ b/entc/integration/integration_test.go
@@ -298,6 +298,10 @@ func Sanity(t *testing.T, client *ent.Client) {
 		require.True(client.Pet.Query().Where(pet.NameContainsFold("A")).ExistX(ctx))
 		require.False(client.Pet.Query().Where(pet.NameContainsFold("%A")).ExistX(ctx))
 		require.False(client.Pet.Query().Where(pet.NameContainsFold("A%")).ExistX(ctx))
+		require.True(client.Pet.Query().Where(pet.NameEqualFold("A_\\")).ExistX(ctx))
+		require.False(client.Pet.Query().Where(pet.NameEqualFold("%A_\\")).ExistX(ctx))
+		require.False(client.Pet.Query().Where(pet.NameEqualFold("A_\\%")).ExistX(ctx))
+		require.False(client.Pet.Query().Where(pet.NameEqualFold("A%")).ExistX(ctx))
 	})
 }