diff --git a/common/static/common/js/components/BlockBrowser/data/api/client.js b/common/static/common/js/components/BlockBrowser/data/api/client.js
index fd98767885..5b945b6657 100644
--- a/common/static/common/js/components/BlockBrowser/data/api/client.js
+++ b/common/static/common/js/components/BlockBrowser/data/api/client.js
@@ -21,7 +21,7 @@ export function buildQueryString(data) {
 }
 
 export const getCourseBlocks = courseId => fetch(
-  `${COURSE_BLOCKS_API}/?${buildQueryString({
+  `${COURSE_BLOCKS_API}?${buildQueryString({
     course_id: courseId,
     all_blocks: true,
     depth: 'all',