diff --git a/generators/javascript/math.js b/generators/javascript/math.js
index a0c8cb426..2e3828cac 100644
--- a/generators/javascript/math.js
+++ b/generators/javascript/math.js
@@ -157,7 +157,7 @@ Blockly.JavaScript['math_number_property'] = function(block) {
         'mathIsPrime',
         ['function ' + Blockly.JavaScript.FUNCTION_NAME_PLACEHOLDER_ + '(n) {',
          '  // https://en.wikipedia.org/wiki/Primality_test#Naive_methods',
-         '  if (n === 2 || n === 3) {',
+         '  if (n == 2 || n == 3) {',
          '    return true;',
          '  }',
          '  // False if n is NaN, negative, is 1, or not whole.',
diff --git a/tests/generators/golden/generated.js b/tests/generators/golden/generated.js
index 7603b8a6d..01e9bd311 100644
--- a/tests/generators/golden/generated.js
+++ b/tests/generators/golden/generated.js
@@ -427,7 +427,7 @@ function test_constant() {
 
 function mathIsPrime(n) {
   // https://en.wikipedia.org/wiki/Primality_test#Naive_methods
-  if (n === 2 || n === 3) {
+  if (n == 2 || n == 3) {
     return true;
   }
   // False if n is NaN, negative, is 1, or not whole.