diff --git a/grpc-sys/build.rs b/grpc-sys/build.rs
index 03285543f..90f640aba 100644
--- a/grpc-sys/build.rs
+++ b/grpc-sys/build.rs
@@ -408,7 +408,10 @@ fn main() {
             .iter()
             .map(|inc_path| inc_path.join("grpc"))
             .find(|grpc_inc_path| grpc_inc_path.is_dir())
-            .expect(&format!("Could not find grpc include dir in {:#?}", lib_core.include_paths));
+            .expect(&format!(
+                "Could not find grpc include dir in {:#?}",
+                lib_core.include_paths
+            ));
         for inc_path in lib_core.include_paths {
             cc.include(inc_path);
         }