diff --git a/javascript/ql/lib/semmle/javascript/StandardLibrary.qll b/javascript/ql/lib/semmle/javascript/StandardLibrary.qll
index b40f10d93691..5e13bdee772a 100644
--- a/javascript/ql/lib/semmle/javascript/StandardLibrary.qll
+++ b/javascript/ql/lib/semmle/javascript/StandardLibrary.qll
@@ -115,7 +115,7 @@ class StringReplaceCall extends DataFlow::MethodCallNode {
    * Holds if this is a global replacement, that is, the first argument is a regular expression
    * with the `g` flag, or this is a call to `.replaceAll()`.
    */
-  predicate isGlobal() { this.getRegExp().isGlobal() or this.getMethodName() = "replaceAll" }
+  predicate isGlobal() { RegExp::isGlobal(this.getRegExp().getFlags()) or this.getMethodName() = "replaceAll" }
 
   /**
    * Holds if this call to `replace` replaces `old` with `new`.
diff --git a/javascript/ql/lib/semmle/javascript/dataflow/Nodes.qll b/javascript/ql/lib/semmle/javascript/dataflow/Nodes.qll
index d88dab4d4317..59ed567e392c 100644
--- a/javascript/ql/lib/semmle/javascript/dataflow/Nodes.qll
+++ b/javascript/ql/lib/semmle/javascript/dataflow/Nodes.qll
@@ -1682,9 +1682,6 @@ class RegExpCreationNode extends DataFlow::SourceNode {
     result = this.(RegExpLiteralNode).getFlags()
   }
 
-  /** Holds if the constructed predicate has the `g` flag. */
-  predicate isGlobal() { RegExp::isGlobal(this.getFlags()) }
-
   /** Gets a data flow node referring to this regular expression. */
   private DataFlow::SourceNode getAReference(DataFlow::TypeTracker t) {
     t.start() and