diff --git a/src/source.cpp b/src/source.cpp
index 089dbddef..b7d1e2499 100644
--- a/src/source.cpp
+++ b/src/source.cpp
@@ -314,7 +314,7 @@ void initialize_source()
     }
     // release the library
     dlclose(source_library);
-    
+
   } else {
     // Generation source sites from specified distribution in user input
     for (int64_t i = 0; i < simulation::work_per_rank; ++i) {