diff --git a/ql/src/codeql_ruby/ast/Operation.qll b/ql/src/codeql_ruby/ast/Operation.qll
index a25b0e4df16..8f3da5ffb5c 100644
--- a/ql/src/codeql_ruby/ast/Operation.qll
+++ b/ql/src/codeql_ruby/ast/Operation.qll
@@ -445,7 +445,7 @@ class Assignment extends Operation {
   override Assignment::Range range;
 
   /** Gets the left hand side of this assignment. */
-  final Expr getLeftOperand() { result = range.getLeftOperand() }
+  Pattern getLeftOperand() { result = range.getLeftOperand() }
 
   /** Gets the right hand side of this assignment. */
   final Expr getRightOperand() { result = range.getRightOperand() }
@@ -554,6 +554,8 @@ class AssignExponentExpr extends AssignArithmeticOperation, @operator_assignment
  */
 class AssignLogicalOperation extends AssignOperation {
   override AssignLogicalOperation::Range range;
+
+  final override LhsExpr getLeftOperand() { result = super.getLeftOperand() }
 }
 
 /**
diff --git a/ql/src/codeql_ruby/ast/internal/Operation.qll b/ql/src/codeql_ruby/ast/internal/Operation.qll
index b605416bce9..ee11ad805ad 100644
--- a/ql/src/codeql_ruby/ast/internal/Operation.qll
+++ b/ql/src/codeql_ruby/ast/internal/Operation.qll
@@ -245,7 +245,7 @@ module NoRegexMatchExpr {
 
 module Assignment {
   abstract class Range extends Operation::Range {
-    abstract Expr getLeftOperand();
+    abstract Pattern getLeftOperand();
 
     abstract Expr getRightOperand();
 
@@ -269,7 +269,7 @@ module AssignExpr {
   class Range extends Assignment::Range, @assignment {
     final override Generated::Assignment generated;
 
-    final override Expr getLeftOperand() { result = generated.getLeft() }
+    final override Pattern getLeftOperand() { result = generated.getLeft() }
 
     final override Expr getRightOperand() { result = generated.getRight() }