diff --git a/src/tools/tidy/src/extdeps.rs b/src/tools/tidy/src/extdeps.rs
index bb375c17682..831eb47858a 100644
--- a/src/tools/tidy/src/extdeps.rs
+++ b/src/tools/tidy/src/extdeps.rs
@@ -37,8 +37,7 @@ pub fn check(path: &Path, bad: &mut bool) {
         }
 
         // extract source value
-        let parts: Vec<&str> = line.splitn(2, '=').collect();
-        let source = parts[1].trim();
+        let source = line.splitn(2, '=').nth(1).unwrap().trim();
 
         // ensure source is whitelisted
         if !WHITELISTED_SOURCES.contains(&&*source) {