diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index 8fba4480c55..d9e0741d5e0 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -965,7 +965,7 @@ namespace ts {
                     // The `newSourceFile` object was created for the new program.
 
                     if (!arrayIsEqualTo(oldSourceFile.libReferenceDirectives, newSourceFile.libReferenceDirectives, fileReferenceIsEqualTo)) {
-                        // 'lib' references has changed. Matches behavior in chagnesAffectModuleResolution
+                        // 'lib' references has changed. Matches behavior in changesAffectModuleResolution
                         return oldProgram.structureIsReused = StructureIsReused.Not;
                     }