diff --git a/packages/eslint-plugin/src/rules/space-infix-ops.ts b/packages/eslint-plugin/src/rules/space-infix-ops.ts
index aa0cfcb3d83..a43ba5c30ab 100644
--- a/packages/eslint-plugin/src/rules/space-infix-ops.ts
+++ b/packages/eslint-plugin/src/rules/space-infix-ops.ts
@@ -174,10 +174,8 @@ export default util.createRule<Options, MessageIds>({
     function checkForTypeAliasAssignment(
       node: TSESTree.TSTypeAliasDeclaration,
     ): void {
-      const leftNode = sourceCode.getTokenByRangeStart(node.id.range[0])!;
-      const rightNode = sourceCode.getTokenByRangeStart(
-        node.typeAnnotation.range[0],
-      );
+      const leftNode = sourceCode.getLastToken(node.typeParameters ?? node.id)!;
+      const rightNode = sourceCode.getFirstToken(node.typeAnnotation);
 
       checkAndReportAssignmentSpace(node, leftNode, rightNode);
     }
diff --git a/packages/eslint-plugin/tests/rules/space-infix-ops.test.ts b/packages/eslint-plugin/tests/rules/space-infix-ops.test.ts
index be347d85663..e8b5fa2bc93 100644
--- a/packages/eslint-plugin/tests/rules/space-infix-ops.test.ts
+++ b/packages/eslint-plugin/tests/rules/space-infix-ops.test.ts
@@ -244,6 +244,9 @@ ruleTester.run('space-infix-ops', rule, {
     {
       code: 'type Baz<T> = T extends (bar: string) => void ? { x: string } : { y: string }',
     },
+    {
+      code: 'type Foo<T extends (...args: any[]) => any> = T;',
+    },
     {
       code: `
         interface Test {