diff --git a/src/init-action.ts b/src/init-action.ts
index 5b74b79c7..747871b09 100644
--- a/src/init-action.ts
+++ b/src/init-action.ts
@@ -227,8 +227,7 @@ async function run(startedAt: Date) {
   let toolsVersion: string;
   let zstdAvailability: ZstdAvailability | undefined;
   let effectiveToolsInput: string | undefined;
-  let effectiveToolsInputSource: EffectiveToolsInputSource =
-    EffectiveToolsInputSource.None;
+  let effectiveToolsInputSource: EffectiveToolsInputSource;
   let toolsRepoPropertyMode: ToolsModeRepositoryPropertyValue | undefined;
 
   try {
diff --git a/src/setup-codeql-action.ts b/src/setup-codeql-action.ts
index 8b240feac..2e25d3058 100644
--- a/src/setup-codeql-action.ts
+++ b/src/setup-codeql-action.ts
@@ -115,8 +115,7 @@ async function run(startedAt: Date): Promise<void> {
   let toolsSource: ToolsSource;
   let toolsVersion: string;
   let effectiveToolsInput: string | undefined;
-  let effectiveToolsInputSource: EffectiveToolsInputSource =
-    EffectiveToolsInputSource.None;
+  let effectiveToolsInputSource: EffectiveToolsInputSource;
   let toolsRepoPropertyMode: ToolsModeRepositoryPropertyValue | undefined;
 
   try {