diff --git a/javascript/extractor/src/com/semmle/js/extractor/ASTExtractor.java b/javascript/extractor/src/com/semmle/js/extractor/ASTExtractor.java
index 246ff58f873..557fe5cb567 100644
--- a/javascript/extractor/src/com/semmle/js/extractor/ASTExtractor.java
+++ b/javascript/extractor/src/com/semmle/js/extractor/ASTExtractor.java
@@ -1375,7 +1375,7 @@ public class ASTExtractor {
       contextManager.leaveContainer();
       scopeManager.leaveScope();
       if (nd.isInstantiated()) {
-        trapwriter.addTuple("isInstantiated", lbl);
+        trapwriter.addTuple("is_instantiated", lbl);
       }
       return lbl;
     }
diff --git a/javascript/extractor/tests/ts/output/trap/conditionalTypes.ts.trap b/javascript/extractor/tests/ts/output/trap/conditionalTypes.ts.trap
index 6620048f6f7..db8707b882a 100644
--- a/javascript/extractor/tests/ts/output/trap/conditionalTypes.ts.trap
+++ b/javascript/extractor/tests/ts/output/trap/conditionalTypes.ts.trap
@@ -8415,7 +8415,7 @@ hasLocation(#22804,#21469)
 enclosingStmt(#22804,#22777)
 exprContainers(#22804,#22183)
 literals("any","any",#22804)
-isInstantiated(#22183)
+is_instantiated(#22183)
 #22805=*
 stmts(#22805,31,#20001,1,"namespa ...  any;\n}")
 #22806=@"loc,{#10000},72,1,101,1"
@@ -10069,7 +10069,7 @@ hasLocation(#23199,#22172)
 enclosingStmt(#23199,#23170)
 exprContainers(#23199,#22805)
 literals("any","any",#23199)
-isInstantiated(#22805)
+is_instantiated(#22805)
 #23200=*
 entry_cfg_node(#23200,#20001)
 #23201=@"loc,{#10000},1,1,1,0"
diff --git a/javascript/extractor/tests/ts/output/trap/namespaces.ts.trap b/javascript/extractor/tests/ts/output/trap/namespaces.ts.trap
index 03925e4738f..2f55d860971 100644
--- a/javascript/extractor/tests/ts/output/trap/namespaces.ts.trap
+++ b/javascript/extractor/tests/ts/output/trap/namespaces.ts.trap
@@ -275,8 +275,8 @@ hasLocation(#20091,#20039)
 enclosingStmt(#20091,#20086)
 exprContainers(#20091,#20079)
 literals("42","42",#20091)
-isInstantiated(#20079)
-isInstantiated(#20071)
+is_instantiated(#20079)
+is_instantiated(#20071)
 #20092=*
 stmts(#20092,32,#20001,1,"import x = M.N.x;")
 hasLocation(#20092,#20015)
diff --git a/javascript/extractor/tests/ts/output/trap/uninstantiatedNamespace.ts.trap b/javascript/extractor/tests/ts/output/trap/uninstantiatedNamespace.ts.trap
index 12f3bfad748..8b3c1e69ec9 100644
--- a/javascript/extractor/tests/ts/output/trap/uninstantiatedNamespace.ts.trap
+++ b/javascript/extractor/tests/ts/output/trap/uninstantiatedNamespace.ts.trap
@@ -835,7 +835,7 @@ scopenesting(#20276,#20215)
 stmts(#20277,0,#20273,0,";")
 hasLocation(#20277,#20155)
 stmt_containers(#20277,#20273)
-isInstantiated(#20273)
+is_instantiated(#20273)
 #20278=*
 stmts(#20278,31,#20212,6,"namespa ... ck {{}}")
 #20279=@"loc,{#10000},22,3,22,27"
@@ -860,7 +860,7 @@ stmts(#20282,1,#20278,0,"{}")
 locations_default(#20283,#10000,22,25,22,26)
 hasLocation(#20282,#20283)
 stmt_containers(#20282,#20278)
-isInstantiated(#20278)
+is_instantiated(#20278)
 #20284=*
 stmts(#20284,18,#20212,7,"var x = ... yBlock]")
 #20285=@"loc,{#10000},24,3,24,82"
@@ -948,7 +948,7 @@ exprContainers(#20302,#20212)
 literals("EmptyBlock","EmptyBlock",#20302)
 bind(#20302,#20217)
 arraySize(#20289,7)
-isInstantiated(#20212)
+is_instantiated(#20212)
 #20303=*
 entry_cfg_node(#20303,#20001)
 #20304=@"loc,{#10000},1,1,1,0"
diff --git a/javascript/ql/src/semmle/javascript/Aliases.qll b/javascript/ql/src/semmle/javascript/Aliases.qll
index 466316f7b8b..bbb74c0ca56 100644
--- a/javascript/ql/src/semmle/javascript/Aliases.qll
+++ b/javascript/ql/src/semmle/javascript/Aliases.qll
@@ -101,3 +101,8 @@ deprecated predicate stmtContainers(Stmt stmt, StmtContainer container) { stmt_c
  * Use `JumpStmt#getTarget()` instead.
  */ 
 deprecated predicate jumpTargets(Stmt jump, Stmt target) { jump_targets(jump, target) }
+/**
+ * Alias for the predicate `is_instantiated` defined in the .dbscheme.
+ * Use `NamespaceDeclaration#isInstantiated() instead.`
+ */ 
+deprecated predicate isInstantiated(NamespaceDeclaration decl) { is_instantiated(decl) }
diff --git a/javascript/ql/src/semmle/javascript/TypeScript.qll b/javascript/ql/src/semmle/javascript/TypeScript.qll
index 6e620ded255..f0b4c3c46ae 100644
--- a/javascript/ql/src/semmle/javascript/TypeScript.qll
+++ b/javascript/ql/src/semmle/javascript/TypeScript.qll
@@ -83,7 +83,7 @@ class NamespaceDeclaration extends NamespaceDefinition, StmtContainer, @namespac
    * A namespace that is empty or only contains interfaces and type aliases is not instantiated,
    * and thus has no namespace object at runtime and is not associated with a variable.
    */
-  predicate isInstantiated() { isInstantiated(this) }
+  predicate isInstantiated() { is_instantiated(this) }
 
   override ControlFlowNode getFirstControlFlowNode() {
     if hasDeclareKeyword(this) then result = this else result = getIdentifier()
diff --git a/javascript/ql/src/semmlecode.javascript.dbscheme b/javascript/ql/src/semmlecode.javascript.dbscheme
index 9b752af7bc2..e4556bf60b8 100644
--- a/javascript/ql/src/semmlecode.javascript.dbscheme
+++ b/javascript/ql/src/semmlecode.javascript.dbscheme
@@ -198,7 +198,7 @@ case @stmt.kind of
 @namespacedefinition = @namespacedeclaration | @enumdeclaration;
 @typedefinition = @classdefinition | @interfacedeclaration | @enumdeclaration | @typealiasdeclaration | @enum_member;
 
-isInstantiated(unique int decl: @namespacedeclaration ref);
+is_instantiated(unique int decl: @namespacedeclaration ref);
 
 @declarablenode = @declstmt | @namespacedeclaration | @classdeclstmt | @functiondeclstmt | @enumdeclaration | @externalmoduledeclaration | @globalaugmentationdeclaration | @field;
 hasDeclareKeyword(unique int stmt: @declarablenode ref);
diff --git a/javascript/ql/src/semmlecode.javascript.dbscheme.stats b/javascript/ql/src/semmlecode.javascript.dbscheme.stats
index 783e97b8ea2..5980591bce9 100644
--- a/javascript/ql/src/semmlecode.javascript.dbscheme.stats
+++ b/javascript/ql/src/semmlecode.javascript.dbscheme.stats
@@ -7908,7 +7908,7 @@
 <dependencies/>
 </relation>
 <relation>
-<name>isInstantiated</name>
+<name>is_instantiated</name>
 <cardinality>5</cardinality>
 <columnsizes>
 <e>
diff --git a/javascript/upgrades/c73fbfca57f3d593b9ff50c6aa3a886d6888efec/upgrade.properties b/javascript/upgrades/c73fbfca57f3d593b9ff50c6aa3a886d6888efec/upgrade.properties
index c9a67d7ac88..ea0b335368a 100644
--- a/javascript/upgrades/c73fbfca57f3d593b9ff50c6aa3a886d6888efec/upgrade.properties
+++ b/javascript/upgrades/c73fbfca57f3d593b9ff50c6aa3a886d6888efec/upgrade.properties
@@ -14,3 +14,5 @@ stmt_containers.rel: reorder stmtContainers.rel(int stmt, int container) stmt co
 stmtContainers.rel: delete
 jump_targets.rel: reorder jumpTargets.rel(int jump, int target) jump target
 jumpTargets.rel: delete
+is_instantiated.rel: reorder isInstantiated.rel(int decl) decl
+isInstantiated.rel: delete