diff --git a/seed/challenges/01-front-end-development-certification/basic-javascript.json b/seed/challenges/01-front-end-development-certification/basic-javascript.json
index 00b93fe045..5b7d536675 100644
--- a/seed/challenges/01-front-end-development-certification/basic-javascript.json
+++ b/seed/challenges/01-front-end-development-certification/basic-javascript.json
@@ -293,7 +293,7 @@
         ""
       ],
       "tail": [
-        "(function(z){return 'sum='+z;})(sum);"
+        "(function(z){return 'sum = '+z;})(sum);"
       ],
       "solutions": [
         "var sum = 10 + 10;"
@@ -330,7 +330,7 @@
         ""
       ],
       "tail": [
-        "(function(z){return 'difference='+z;})(difference);"
+        "(function(z){return 'difference = '+z;})(difference);"
       ],
       "solutions": [
         "var difference = 45 - 33;"