diff --git a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-plus-operator.md b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-plus-operator.md
index 4b9adc2615..ffaa670aaa 100644
--- a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-plus-operator.md
+++ b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-plus-operator.md
@@ -28,7 +28,7 @@ var ourStr = "I come first. " + "I come second.";
 The string `I come first. I come second.` would be displayed in the console.
 # --instructions--
 
-Build `myStr` from the strings `This is the start. ` and `This is the end.` using the `+` operator.
+Build `myStr` from the strings `This is the start.` and `This is the end.` using the `+` operator. Be sure to include a space between the two strings.
 
 # --hints--
 
diff --git a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-the-plus-equals-operator.md b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-the-plus-equals-operator.md
index e3eeaef1c2..9068232d73 100644
--- a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-the-plus-equals-operator.md
+++ b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-the-plus-equals-operator.md
@@ -24,7 +24,7 @@ ourStr += "I come second.";
 
 # --instructions--
 
-Build `myStr` over several lines by concatenating these two strings: `This is the first sentence. ` and `This is the second sentence.` using the `+=` operator. Use the `+=` operator similar to how it is shown in the example. Start by assigning the first string to `myStr`, then add on the second string.
+Build `myStr` over several lines by concatenating these two strings: `This is the first sentence.` and `This is the second sentence.` using the `+=` operator. Use the `+=` operator similar to how it is shown in the example and be sure to include a space between the two strings. Start by assigning the first string to `myStr`, then add on the second string.
 
 # --hints--