diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index 74abd84b436..e536111a489 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -1734,6 +1734,7 @@ namespace ts {
                 if (!newSourceFile) {
                     return StructureIsReused.Not;
                 }
+                newSourceFile.impliedNodeFormat = sourceFileOptions.impliedNodeFormat;
                 newSourceFile.packageJsonLocations = sourceFileOptions.packageJsonLocations?.length ? sourceFileOptions.packageJsonLocations : undefined;
                 newSourceFile.packageJsonScope = sourceFileOptions.packageJsonScope;
 
@@ -2968,6 +2969,7 @@ namespace ts {
                 file.path = path;
                 file.resolvedPath = toPath(fileName);
                 file.originalFileName = originalFileName;
+                file.impliedNodeFormat = sourceFileOptions.impliedNodeFormat;
                 file.packageJsonLocations = sourceFileOptions.packageJsonLocations?.length ? sourceFileOptions.packageJsonLocations : undefined;
                 file.packageJsonScope = sourceFileOptions.packageJsonScope;
                 addFileIncludeReason(file, reason);