diff --git a/client/pages/gwas.vue b/client/pages/gwas.vue
index 942a6aa723067010fd710f2b46a480151bfb95c5..c77ac5526994823e903b4877a96d2c1f2bbd43e0 100644
--- a/client/pages/gwas.vue
+++ b/client/pages/gwas.vue
@@ -91,6 +91,7 @@ export default {
   },
   methods: {
     selectAncestry(initTableName) {
+      if (this.selectedInitTable === initTableName) return
       this.selectedInitTable = initTableName
       this.$axios.$post('/phenotypes', { initTableName })
         .then(phenotypes => {