diff --git a/lib/pgFormatter/Beautify.pm b/lib/pgFormatter/Beautify.pm
index d5f5a6b..3929c9b 100755
--- a/lib/pgFormatter/Beautify.pm
+++ b/lib/pgFormatter/Beautify.pm
@@ -3940,10 +3940,15 @@ sub beautify {
 			}
 			$self->{'no_break'} = 0;
 			if ( defined $self->_next_token
-				and $self->_next_token !~ /^(EXISTS|;)$/i )
+				and ( $self->_next_token !~ /^(EXISTS|;)$/i
+					or ( uc($self->_next_token) eq 'EXISTS'
+						and defined $self->{'_tokens'}->[1]
+						and $self->{'_tokens'}->[1] eq '(' ) ) )
 			{
 				if (   uc( $self->_next_token ) ne 'NOT'
-					|| uc( $self->{'_tokens'}->[1] ) ne 'EXISTS' )
+					|| uc( $self->{'_tokens'}->[1] ) ne 'EXISTS'
+					|| ( defined $self->{'_tokens'}->[2]
+						and $self->{'_tokens'}->[2] eq '(' ) )
 				{
 					$self->_new_line( $token, $last )
 					  if ( $token =~ /^LOOP$/i );
@@ -4179,7 +4184,9 @@ sub beautify {
 				$self->{'_has_over_in_join'} = 1;
 			}
 			$self->{'_is_in_join'} = 0;
-			if (    !$self->{'_is_in_if'}
+			# Keep query predicates multiline inside procedural conditions.
+			if (    ( !$self->{'_is_in_if'}
+					or ( $self->{'_is_subquery'} and $self->{'_parenthesis_level'} ) )
 				and !$self->{'_is_in_index'}
 				and !$self->{'_is_in_merge'}
 				and ( not defined $last or $last !~ /^(?:CREATE)$/i )
diff --git a/t/pg-test-files/expected/opr_sanity.sql b/t/pg-test-files/expected/opr_sanity.sql
index fe62725..ddde41a 100644
--- a/t/pg-test-files/expected/opr_sanity.sql
+++ b/t/pg-test-files/expected/opr_sanity.sql
@@ -38,8 +38,8 @@ BEGIN
             AND casttarget = $2
             AND castmethod = 'b'
             AND castcontext = 'i') THEN
-    RETURN TRUE;
-END IF;
+        RETURN TRUE;
+    END IF;
     IF $2 = 'pg_catalog.any'::pg_catalog.regtype THEN
         RETURN TRUE;
     END IF;
@@ -53,9 +53,9 @@ END IF;
                 oid = $1
                 AND typelem != 0
                 AND typlen = -1) THEN
-        RETURN TRUE;
+            RETURN TRUE;
+        END IF;
     END IF;
-END IF;
     IF $2 = 'pg_catalog.anyrange'::pg_catalog.regtype THEN
         IF (
             SELECT
@@ -93,8 +93,8 @@ BEGIN
             castsource = $1
             AND casttarget = $2
             AND castmethod = 'b') THEN
-    RETURN TRUE;
-END IF;
+        RETURN TRUE;
+    END IF;
     IF $2 = 'pg_catalog.any'::pg_catalog.regtype THEN
         RETURN TRUE;
     END IF;
@@ -108,9 +108,9 @@ END IF;
                 oid = $1
                 AND typelem != 0
                 AND typlen = -1) THEN
-        RETURN TRUE;
+            RETURN TRUE;
+        END IF;
     END IF;
-END IF;
     IF $2 = 'pg_catalog.anyrange'::pg_catalog.regtype THEN
         IF (
             SELECT
diff --git a/t/test-files/ex85.sql b/t/test-files/ex85.sql
index dc1be03..5c591d9 100644
--- a/t/test-files/ex85.sql
+++ b/t/test-files/ex85.sql
@@ -1,3 +1,21 @@
+-- Procedural existence checks must open an indentation level, unlike DDL guards.
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM widgets WHERE id = 1 AND enabled) THEN
+        IF EXISTS (SELECT 1 FROM other_widgets WHERE id = 1 OR id = 2) AND true THEN
+            EXECUTE $sql$SELECT 1;$sql$;
+        ELSE
+            RAISE NOTICE 'missing';
+        END IF;
+    ELSE
+        PERFORM 2;
+    END IF;
+    PERFORM 3;
+END
+$$;
+
+CREATE TABLE IF NOT EXISTS widgets (id integer, enabled boolean);
+DROP TABLE IF EXISTS widgets;
 SELECT 'a'
 'b' AS lit
 FROM t;
diff --git a/t/test-files/expected/ex85.sql b/t/test-files/expected/ex85.sql
index 556c4e2..e62b61c 100644
--- a/t/test-files/expected/ex85.sql
+++ b/t/test-files/expected/ex85.sql
@@ -1,3 +1,41 @@
+-- Procedural existence checks must open an indentation level, unlike DDL guards.
+DO $$
+BEGIN
+    IF NOT EXISTS (
+        SELECT
+            1
+        FROM
+            widgets
+        WHERE
+            id = 1
+            AND enabled) THEN
+        IF EXISTS (
+            SELECT
+                1
+            FROM
+                other_widgets
+            WHERE
+                id = 1
+                OR id = 2) AND TRUE THEN
+            EXECUTE $sql$SELECT 1;$sql$;
+        ELSE
+            RAISE NOTICE 'missing';
+        END IF;
+    ELSE
+        PERFORM
+            2;
+    END IF;
+    PERFORM
+        3;
+END
+$$;
+
+CREATE TABLE IF NOT EXISTS widgets (
+    id integer,
+    enabled boolean
+);
+
+DROP TABLE IF EXISTS widgets;
 SELECT
     'a'
     'b' AS lit